The LAPD, FBI and CIA
The LAPD, the FBI, & the CIA were all trying to prove that they are the best at apprehending criminals. The President decided to give them a test. He had the Pentagon release a rabbit into a forest and each of them had to catch it.
The CIA went in. They placed animal informants throughout the forest. They questioned all plant and mineral witnesses. After three months of extensive investigations they concluded that rabbits do not exist.
The FBI went in. After two weeks with no leads they burned the forest, killing everything in it, including the rabbit and they made no apologies.
The LAPD went in. They came out two hours later with a badly beaten bear. The bear was yelling: "Okay, okay, I'm a rabbit, I'm a rabbit."