[[WMG: Riggs is losing his eyesight.]]
He's shown to have ImprobableAimingSkills throughout the films. Why else would he even ''need'' a LaserSight in the fourth.

[[WMG: The Flamethrower guy is a [[VideoGame/TheDivision Cleaner]]]]
Through some quirk of the game or whatever, he's dropped into 1998 still trying to burn out the Dollar Flu, regardless who's in his way.