Joke about special agencies

I'm not too good at telling jokes but anyways, a good friend of mine which showed me the way to Delphi programming told me this joke today:

The Government of U.S.A. wants to know which agency is the best out of the following three: C.I.A., F.B.I. and L.A. P.D..
So it organized a contest -- the scope is to find the rabbit which was released in the forest by the Government, first agency C.I.A. enters the forest, spreads it's spies among the animals all over the place, after 3 months and shi*et load of money the C.I.A. came to the conclusion that the Government did NOT release any rabbit.
Second agency(F.B.I.) enters the forest and after 3 days of searching and investigations it burns down the forest, F.B.I. conclusion: The rabbit should have thought about us burning the forest -- CASE CLOSED!
Third agency(L.A. P.D.) enters the forest and after 2 hours comes out with a big scary bear which was screaming:
- I'm the madafacking rabbit!

Note: that this joke has nothing to do with the capability of any agency mentioned above.