He or she may be called the Radar Intercept Officer ("Rio"), the Tail Gunner, the Navigator or the Weapons Systems Officer ("Whizzo"). However, they all do the same job, acting as a MissionControl in the back seat (or sometimes in the right hand side seat) of the AcePilot's own fighter or attack aircraft. They don't usually fly the aircraft (they're often not qualified to), but instead notify their boss of approaching fighters, surface-to-air missiles etc. Having an extra pair of eyes helps a lot. They also help in more technical matters such as attending to the vehicle's operational systems, freeing up the pilot to concentrate on piloting and combat.

Their position is useful for comedy, as they can throw up in particularly vicious manoeuvres. It also allows for a major sense of danger they can be hit in a fight and create a time-sensitive element to the mission. The position is also useful in general for giving the pilot somebody to talk to without necessarily needing another plane nearby, similar to cop shows where two cops always ride in a car together. They can also highlight the drama of fight scenes when enemies approach, the back guy races through the craft's combat analysis computer to identity them and [[OhCrap reacts with alarm]] as he realizes what they are taking on. The back guy can also be working the craft's operating maintenance systems to attempt to keep the craft operating even as the pilot is pushing the envelope trying to keep them from being shot down.

Not many contemporary real-world fighters or aircraft have these,[[note]](excepting dedicated training variations of common aircraft)[[/note]] but they were once common. The F-14 and F-4 are arguably the most famous examples, inspiring many others. Named after real military terminology, where the radar officer was called this or simply "GIB". The AcePilot would be the FUF, or "Fucker Up Front".

If an AcePilot doesn't have a GuyInBack with whom to exchange witty banter, the "sidekick" role will probably go to their {{Wingman}}, a fellow pilot in a supporting position. In SpeculativeFiction, the role may be filled by a talkative computer, ranging from RobotBuddy ("Tracking multiple targets, bearing one-seven-five-mark-one-niner") to glorified warning light ("Altitude. Altitude. Altitude...") - though they have that one today.

Note that for many Attack Helicopters with tandem seating, the trope is inverted - the Guy In Back is actually the pilot, with the person up front responsible for manning the weapons. Not to be confused with SoldiersAtTheRear; these guys may be in back, but they actually do something.

!!Examples:

[[foldercontrol]]

[[folder:Anime and Manga]]
* The {{Simoun}}s can only be piloted by two people: primary pilot Auriga and secondary pilot/navigator/gun controller Sagitta. The latter is basically the GuyInBack, except it's [[ImprobablyFemaleCast always a girl (as is the pilot in front)]].
* Nojima is Kurushima's secondary pilot/navigator in ''KuroganePukapukaTai''.
* Micky in {{Area 88}} has a modified F-14A Tomcat. The RIO station is still there (the reporter joins him for one mission in the anime) but it isn't required, probably due to the fact he doesn't use the radar-guided AIM-54 Phoenix or AIM-7 Sparrow, so he flies solo.
** Micky actually does fire and carry Sparrows in the 2003 series, so apparently his Tomcat has simply been modified to the point it no longer needs a RIO, possibly taking cues from the then-prototype single-seat F/A-18C or the in-service F-15C.
* Fukai Rei from ''Franchise/SentouYouseiYukikaze'' is an interesting case: In the first episode, both his [=RIOs=] wind up dead. In the second episode, using the newly-fielded FFR-44MR Mave, his RIO is, while qualified, is not a pilot in the strictest sense. In the third episode, his RIO is an engineer that he needs to ferry. In the fourth, it's his CO that's behind him ([[HoYay no pun intended]]). Finally, in the fifth one, he flies solo. Then again, through the series, he is more [[CargoShip comfortable with the plane's AI]] than any RIO. The novel's translation changes the title from RIO to EWO (electronic warfare officer).
* The [[ArtificialHuman Fatimas]] in ''TheFiveStarStories'' are something between a Guy In Back and WetwareCPU, linking directly with the HumongousMecha's computer systems to control most of its incredibly complex operations so the main pilot can focus on moving it around and using the weapons. They usually sit in a completely different cockpit, though, with the Fatima in the head and the "Headdliner" in the torso, though the really humongous Jagd Mirage mechs are equipped with a two-seater cockpit.
* MacrossZero featured F-14s, and the VF-0 apparently also had a RIO position, unlike its descendant VF-1. The VF-1 does have a two-seat trainer variant that is apparently used for impromptu flying dates with idol singers.
** Probably a training variant (common with real-world fighters).
** It's kinda zigzagged throughout Macross. In MacrossZero, the VF-0A and VF-0S (used by Roy) are single seat swing-wing fighters, while the VF-0D (used by Shinn) is a delta wing tandem seater. In Macross, the VF-1D is a two seat trainer. In MacrossPlus, while Isamu usually flies the YF-19 as a single seater, it does carry space in the cockpit for a RIO, which is where Jann tagged along (and the RIO can be ejected independently of the pilot). Finally, in MacrossFrontier, while the VF-25 is primarily a single-seater fighter, it's shown to have enough space in the cockpit for one passenger, and presumably can be configured for a RIO if need be.
* The combined ''{{Vandread}}'' fighters, with the comedic/fanservice twist that they mostly lack second seats. When Hibiki's Vanguard merges with Meia's Dread, he becomes the "Guy In Lap". With Dita it's reversed. Jura remembers to bring a chair.
* In ''MuvLuvAlternativeTotalEclipse'', the Scarlet Twins's SU-37UB Terminator is specially set up so the two can work together, with Cryska being the "Chick in Back" for the smaller Inia.
** Supplementary materials also note that the US Navy uses two-seat setups for the F-14s and F-18F Super Hornet.
* Fana makes herself useful in this capacity in ''LightNovel/ToAruHikushiENoTsuioku'', despite being a noble with minimal training. Interestingly, it's the AcePilot who gets hurt.
* In ''Anime/GunBuster'', Kazumi serves as the GIB for Noriko in the titular mecha.
[[/folder]]

[[folder: Comic Books]]
* In the XWingSeries comics, the ex-Imperial Baron Soontir Fel, who is the image on AcePilot, goes with the rest of Rogue Squadron on a mission involving Y-Wings and chooses to act as a gunner, letting his old student Tycho actually fly the thing. He's absurdly good at flying FragileSpeedster craft, but he doesn't have the UniversalDriversLicense - he's not flight-qualified on Y-Wings.
[[/folder]]

[[folder:Film]]
* "Goose" in ''Film/TopGun'' is a famous example, being killed when he hits the canopy while ejecting.
* Luke Skywalker's gunner Dack Ralter is hit during the battle of Hoth at the beginning of ''Franchise/StarWars'' Episode V, resulting in the snowspeeder they were using becoming functionally useless against the attacking [=AT-ATs=] and him having to land (of course, the smoke trailing out of it from the shot that killed Dack might have had something to do with it).
** When Luke flies an X-Wing, R2-D2 is the Guy in Back (and in Episode IV performs the traditional GIB function of getting injured to increase the drama). In the prequels, Obi-Wan Kenobi also has an R2 droid as his GIB. In fact, the design of the X-Wing starfighter, with the R2 units poking out of the top behind the cockpit, was meant to invoke the image of bombers with gun turrets (compare an X-Wing to a Grumman Avenger or a Boulton-Paul Defiant.)
** In ''Film/RevengeOfTheSith'', the ARC-170 reconnaissance fighters featured in the opening battle feature ''two'' Guys In Back. One co-pilot, and a rear-facing tail gunner (three if you count the R2 unit). This is in part because it was based on the P-61 Black Widow night fighter.
* The main motivation for the lead character of ''Film/FlightOfTheIntruder'' is the senseless death of his GuyInBack as a result of a spectacularly lucky shot from a peasant with a rifle.
** The rest of the movie follows his exploits with his new [=GIB=], played by Wilem Dafoe's [[BadassMustache badass]]PornStache.
* In ''Film/BehindEnemyLines'' it's the Weapons Systems Officer played by Owen Wilson, not the pilot, who is the hero, by virtue of not injuring his leg upon landing and thus escaping execution.
* ''Film/TheLastStarfighter'''s gunstar is set up like an attack helicopter, with Grig (in back) as the navigator and pilot, responsible for navigation and technical matters, while Alex (in the front seat) serves as the ship's gunner.
* The Franchise/MarvelCinematicUniverse ''Film/IronMan'' films have JARVIS taking this role to Tony Stark. This falls under the SpeculativeFiction "talking computer" sub-category, what with JARVIS being an ArtificialIntelligence and Stark piloting a suit of flying PowerArmor rather than a plane. Other than that, they play this trope like any other, with JARVIS serving as something of a flight technician and navigator, responding to Stark's instructions, and even taking control of the armor as a backup pilot if need be.
* In ''BlueThunder'' Roy Scheider's rear-seat guy in the eponymous supercopter is nicknamed "Jafo" for "Just A F***in' Observer." The nickname becomes a plot point later in the film.
[[/folder]]

[[folder:Literature]]
* In one of the Creator/TomClancy franchise ''Op-Center'' novels, a female RIO is killed by enemy fire during a recce flight.
* In ''Literature/TheHuntForRedOctober'', a trigger-happy Soviet pilot fires a missile at Robby Jackson's F-14, severely damaging the aircraft and badly injuring his RIO, which ultimately requires major surgery to fix.
* In the Literature/WingCommander novel ''End Run'', the death of a turret gunner in a damaged bomber that Kevin "Lonewolf" Tolwyn (nephew of the admiral) was supposed to escort back to the ''Tarawa'' was a significant contributor to Tolwyn's CharacterDevelopment from a wild hotshot to a reliable "team player".
* ''Franchise/StarWarsExpandedUniverse'':
** In ''Film/TheEmpireStrikesBack'', Wes Janson was Wedge Antilles' gunner. The EU, particularly the ''ComicBook/XWingSeries'', reveals that he's a ridiculously capable pilot himself, if not quite in Wedge's league ([[ImprobablePilotingSkills then again, few are]]). Evidently he's a career fighter pilot, with "gunner" being a secondary specialization.
** In the ''Literature/NewJediOrder'', [[BadassNormal Danni Quee]] takes up this position for ''Wild One'', Jedi Knight Saba Sebatyne's personal ship. She serves as the [[RedOniBlueOni Blue Oni]] to Saba and helps counterbalance her AttackAttackAttack nature, while also serving as techie, sounding board, and occasional improv therapist. Curiously, they manage to have this dynamic even though ''Wild One'' is a Skipray gunship, not a fighter. (It has at least four crew: Saba commanding and handling weapons, Danni on comms, [[DeflectorShield shields]], and {{Everything Sensor}}s, a pilot, and at least one turret gunner.)
** The technical books speak of a B-Wing variant that has a GuyInBack. There's also the two-man K-Wing heavy bomber that debuted in ''Literature/BlackFleetCrisis'', although the final design[[note]]several details of the K-Wing were retconned by ''The New Essential Guide to Vehicles and Vessels'', including the cockpit configuration[[/note]] made it more of a Guy to the Side.
* The book and movie ''Literature/FlightOfTheIntruder'' have a Guy On The Right instead (given that [[http://en.wikipedia.org/wiki/A-6_Intruder A-6 Intruder]] cockpits are configured with the pilot and bombardier/navigator sitting next to each other).
[[/folder]]

[[folder:Live Action TV]]
* In ''Series/{{Airwolf}}'' this is Dom's usual job, handling the computers and monitoring systems (the eponymous helicopter could be flown solo if needed), although Caitlin and Archangel also did it on occasions.
* ''Series/{{JAG}}'': Whenever Harmon Rabb flies in an F-14 Tomcat he has a RIO. Elizabeth "Skates" Hawkes usually filled the role, though there were one-offs (either a dead pilot's RIO or someone else involved in the case). In the pilot, Harm himself was the GIB and had to take over when the pilot (the ship's CAG) was injured.
* From ''Series/StargateSG1'', the X-302/F-302 fighter-interceptors, as well as their short-lived predecessor the X-301 and the Goa'uld [[NamesToRunAwayFromReallyFast Death Gliders]] they're based on, have one of these. Occasionally plot-relevant, though mostly for the sake of getting two main characters into trouble at one time. In what may be an homage to the Star Wars example above, it is revealed in [[ColonelBadass Colonel]] Mitchell's first appearance that his copilot was injured by enemy fire when they were flying in the battle above [[IcePlanet Antarctica]] shortly before they crashed.
* The new series of ''Series/{{Battlestar Galactica|Reimagined}}'' has Raptors, with a crew of one pilot and one Electronic Countermeasures Officer. However, the [=ECOs=] are also trained as pilots, and frequently take on this role as a result of the military's somewhat severe crew shortage.
* Likewise in the original ''Series/{{Battlestar Galactica|Classic}}'', the Cylon fighters had two occupants seated side by side with a third in the back (can be seen as a throwback in the new series during the "Razor" special)
* Ryu had this position in the Gun-Crusader in ''Series/UltramanMebius'', but usually sits in front in the Gun-Winger. Marina and George usually have the position here, using their superior hearing and sight (respectively) to help them watch out for a {{Kaiju}}'s attacks.
* ''Series/{{NCIS}}'': Season 1, Episode 5 "The Curse", doesn't have a actual [=GIB=], but mentions the term in this memorable quote:
-->'''Todd:''' RIO?\\
'''[=DiNozzo:=]''' Radar Intercept Officer. Also called a [=GIB=], one B, short for Guy in Back.\\
'''Todd:''' (''turns to Gibbs'') Why do you need two B's?\\
'''Gibbs:''' (''{{deadpan|Snarker}}'') Second one's for "bastard".
[[/folder]]

[[folder:Other]]
* {{Bionicle}}: In the first Mata Nui Online Game, you play as a Second for a Kewa (really big bird) pilot during the Le-Koro level. Your job is to shoot down enemy Nui-Rama (giant flies).
[[/folder]]

[[folder:Tabletop Games]]
* In TabletopGame/{{Warhammer 40000}} and the spin-off air combat game Aeronautica Imperialis, several planes have guys in back.
** The Eldar Phoenix bomber and Vampire-series aircraft both have copilots, in the latter case with a rear-facing cockpit.
** The Ork Fighta-Bommer has a rear-facing gun turret, as do all Bommer variants.
** The Imperial Marauder bomber has got a tail gunner in most variants.
** The Imperial Valkyrie and its derivatives all have two cockpits in an attempt to imitate real attack helicopters.
[[/folder]]

[[folder:Real Life]]
* The in-service fighter/attack aircraft with this capability in the front-line versions:
** F-14 Tomcat
** F-4 Phantom II
** F-15E Strike Eagle
** [=MiG-31=] "Foxhound"
** F/A-18B/D/F/G [=Hornet/SuperHornet/Growler=]
** Some "Flanker" versions (Mainly Su-30 variants and Su-27UB trainers)
** Su-34 "Fullback"
** Panavia Tornado
** Eurocopter Tiger
** AH-64 Apache
** Mi-24 "Hind"
** The B-2 Spirit is interesting in that it can be flown by one pilot, but has two in case of extremely long flights, to allow one pilot to ''sleep in the back''.
*** Most bombers have at least two pilots for the same reason that airliners do: because of the long times the mission could take. They also usually sit side-by-side, the position in the back reserved for other crewmembers like flight engineer or radio operator if they exist.
** Attack helicopters are an interesting reversal: the GuyInBack there sits ''in front'', because their main function is to aim the chopper's antitank missiles and good visibility is crucial here.
* Historical ones of note:
** SBD Dauntless
** Junkers Ju-87
** TBF Avenger
** Fairey Swordfish
** A-6 Intruder
** Blackburn Buccaneer
** The Boulton Paul Defiant and Blackburn Roc were both "Turret Fighters", fighters equipped with a gun turret. They ultimately proved to be outclassed in dogfights due to the extra weight the turret added, although the Defiant saw some success as a night fighter.
** The P-61 Black Widow, a purpose-designed night fighter equipped with a turret, required a GIB in the Radar Operator role.
** Early versions of the B-52 Stratofortress had a tailgunner[[note]]Early models of the B-52 put this guy all by himself in the tail of the plane, similar to WWII bombers; later models put him in the cabin with the rest of the aircrew, controlling the guns remotely[[/note]] with a radar-assisted gun turret. B-52 gunners scored two air-air kills in the Vietnam War.
*** Due to the different ways the cockpit and the tailgunner's station were designed [[note]](the cockpit was somewhat similar to an airliner, with the pilots sitting side by side and looking out a row of windows in front of and next to them, while the tail gunner had something like a fighter pilot's cockpit, but pointing aft instead of forward)[[/note]] the tailgunner in the earlier models could often see ''more'' of the plane than the pilot could, being able to tell the pilot useful information like "There's some smoke coming out of the bottom of the plane", "Missiles approaching!" and "[[DangerDeadpan Hey boss, the wing fell off.]]"
** Variation: the [[http://en.wikipedia.org/wiki/North_American_F-82_Twin_Mustang F-82 Twin Mustang]], which was quite literally two P-51 Mustang fuselages connected by a wing segment making it more of a Guy to the Side. Again, the second pilot's job was to fly to the target, leaving the other guy fresh to do the fighting.
* One of the uses, starting in the Vietnam War, for a [=GIB=] in a fighter jet was for employing Wild Weasel tactics. Plainly speaking, this involved a fighter bomber modified with radar-detecting equipment (and a [=GIB=] to run that equipment) which would offer itself as bait for the enemy defenses, trying to get them to reveal their position by targeting the Wild Weasel jet. Once an enemy had painted them with their radar, or took a shot at them with their AA guns, they'd (hopefully) evade the incoming fire and lay in their own attack to destroy the enemy. Quite a few of these missions ended in [[StealthPun Downer Endings]].
** There's a good reason that the Wild Weasels adopted "[[FunWithAcronyms YGBSM]]" as their motto, for "[[YouHaveGotToBeKiddingMe You Gotta Be Shittin' Me]]." Supposedly it was the first reaction from the first Wild Weasel pilot when he learned exactly what he was supposed to do. The two crewmembers had to trust each other so closely in order to survive these missions that it wasn't unheard of for a pilot and GIB to have a ''[[HoYay faux-wedding ceremony]]'' upon completing their training.
** In the USAF, the [=GIB=] in the early Wild Weasel aircraft such as the F-100F and EF-105F was known as the "Bear" (short for "trained bear").
* The original Hind helicopters had a crew of 2-3 men. While only two were required to fly and man the weapons, a technician had his place behind them, manning the radio or other gear.
** Note that the Hind was designed as a kind of a "[[AwesomePersonnelCarrier flying APC]]" and had a cargo area that could fit 7-8 troopers, 2-3 tons of cargo or three stretcher patients for medevac. Engineer's station is in this cargo bay.
** Mi-28 had this bay removed because it was rarely used in practice (pilots preferred to have more ammo instead), but it kept some sort of "trunk" for spares or one person.
* Averted with the (now retired) F-111 "Aardvark" (though it was a light bomber, a carrier based interceptor version reached prototype stage only to be rejected) as its two crew sat side-by-side. Interestingly, there are some planes today that do this including two Russian Sukhoi aircraft, the Su-24 Fencer and the Su-34 Fullback (both spoken of as fighters even though they're light-bombers). Interestingly, the latter has some luxuries considered rare in a fighter including a small galley, a lavatory, and sleeping facilities. Rare for a helicopter, the Ka-52 also had side by side seating
** There are advantages and disadvantages to both. The side by side seating allows for much better coordination for the crew. Unfortunately, in aerial combat, this position also gives much lower situational awareness than tandem seating.

[[/folder]]

[[folder:Video Games]]
* Several ''VideoGame/AceCombat'' aircraft have obvious RIO's, including the Tomcat, Phantom and Tornado. However, it's implied that there is only a single pilot onboard, such as when a pilot is shown ejecting (Heartbreak 1 in [=AC5=] ejects from his F-4, a two-seater, but only 1 parachute is shown) Like with the Area 88 entry, it is possible the planes have a radar operator setup, but it isn't required for dogfighting.
** Or the second guy didn't get out.
*** Twin seat fighters are usually wired so one crewman pulling his eject handle ejects both, in case the other crewman is incapacitated.
* Flying any aircraft in ''Heroes of the Pacific'' that has 2 or more crew (Dauntless, Avenger, and Mitchell bombers) will give you a gunner who tries to call out useful information ('Bandits 3 o'clock', 'Taking serious damage') but sometimes is simply annoying (when pulling a hard turn, 'Jesus, go easy!')
** The much older game "Aces of the Pacific" gave you a tail gunner (in the appropriate aircraft) who would give similar information. If someone got behind you, you'd hear his gun go off. Very, very rarely you would hear him say "I just shot down a fighter!"
* You can hop into the back seat in many aircraft in the ''VideoGame/{{Battlefield}}'' games.
** ''VideoGame/{{Battlefield 3}}'' has one specific application in the "Going Hunting" campaign mission, where you play as the weapon systems officer of an F/A-18F Super Hornet and shoot down enemy planes while an NPC does the actual flying.
* Some vehicles in ''VideoGame/StarWarsBattlefront'' have a secondary gunner of some sort, but the best fit is probably the tail gunner in the Y-wing.
* ''VideoGame/{{Starlancer}}'', the predecessor to ''VideoGame/{{Freelancer}}'' ([[SequelDisplacement yes, there was one]]) had a recurring copilot who acted as ExpositionFairy and behaved much like the ''Heroes Of The Pacific'' example above. More helpful and less annoying than he sounds.
* Technically, the option exists for any craft in the ''VideoGame/WingCommander'' series with a rear turret to have a gunner, but for the most part they go unnamed. The games allow you to switch to that turret, but while doing so you can't control the rest of the ship.
** In ''Wing Commander IV'', Pliers notes that Blair will have to use an inferior auto-gunner in his craft, as the ''Intrepid'' doesn't have a person to spare for the duty.
[[/folder]]

[[folder:Webcomics]]
* In ''Webcomic/{{Terra}}'' the United Earth Coalition's F-71 Valkyrie is a two-person fighter, with the Guy in Back having the job title of Flight Engineer. Among the main cast, Alexis Hawke is the pilot and Rick [=MacFarlane=] is the Flight Engineer.
[[/folder]]

[[folder:Western Animation]]
* Jake "Razor" Clawson in ''WesternAnimation/SwatKats''. He was physically smaller than T-Bone, but unlike the usual for the role he wasn't a non-combatant. He did all the shooting, and he was also the one most likely to jump from the plane into combat. On a missile. That turned into a motorcycle.
* The short-lived ''TabletopGame/{{Battletech}}'' cartoon had the Strikers' tac-ops officer directing the group from the back seat of a ''[[HumongousMecha Battlemech]]'' in later episodes. Not only that, she ''enjoyed'' it.
* In ''WesternAnimation/ExoSquad'', Neosapien on the side of humankind Marsala was a GIB in an exceptionally big [[MiniMecha e-frame]] - the size of an attack chopper when the rest were barely SUV sized.
[[/folder]]

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