"Mr. President, the [insert bad guy] has the [insert WMD]. The world is at stake!"
"Well, as the nation's leader, I have access to the army, navy, marines, and air force. If none of them do it, I can hire mercenaries. All of them highly trained and willing to die for the country. But I think I'll just use this list of randomly selected high school freshmen who have no formal training at all."
— Swap president for king and military names for other stuff for fantasy settings.
"You'd think Zordon would be a lot smarter to say something like 'Alpha, Rita's escaped, bring me the five greatest martial artists on the planet!' or 'Alpha, get me Chuck Norris, Jet Li, Steven Seagal, Triple H, and Bruce Campbell!'"
"Power Rangers", huh? So, Zordon's still using a bunch of kids to do his dirty work.
— Ivan Ooze, Mighty Morphin' Power Rangers: The Movie