Blaine McCracken is an agent with the CIA.
He is called a rogue agent by most of his superiors and he doesn't try to argue the point. He is a rogue because he hates incompetence and inaction and many of his bosses would rather do nothing than do something wrong. He is a rogue because he will not wait for an order to do what is right but will just go do it. And he's had many years to perfect his act.
A member of the earliest Green Beret outfits, before, he says, they were called Special Forces, he served two long tours in Vietnam and Cambodia attached to a CIA group. Along with his friend, Johnny Wareagle, he harassed and targeted the enemy without mercy until that war was determined unwinnable.
After that he transferred to the CIA as an actual agent where his renegade style earned him both enemies and commendations. But the enemies spoke louder and when he talked out of turn during a botched hijacking in London, he was exiled to a mailroom in the Agency's Paris bureau. Actually, he got angry at the inaction which cost innocent lives and shot the genitals from a statue of Churchill in a major square, hoping to draw attention to the lack of balls. For this he earned the nickname of McCrackenballs and the demotion.
Eventually, though, enough problems came forth that cried for someone of McCracken's tenacity and he was back in action. But this time more than ever by his own rules.
And no matter who asked for his help, from the CIA to the military to the President to other countries, his demand remained the same. If his help was needed, it had to be done his way.