So these three generals: army general (AG), navy general (NG) and marines general (MG) are sitting and playing cards. They start arguing about whose soldiers are the bravest. 
So AG calls up one of his privates and goes:
-Son, take that black hawk 1000 FT in the sky and jump out without a parachute.
So the private does that and dies
AG:
-See, that was a brave man.

NG:
-Ohh that's nothing
calls up one of his sailors and says:
-Son, i want you to dive 50ft deep and hold your breath as long as u can.
So the sailor does that and drowns.

MG: Thats nothing!
Calls up one of his privates;
MG:Son, do you see that tank doing 50mph?!
Private: Sir, Yes Sir!
MG: I want you to go and stand in front of that tank!
Private Sir, F*** YOU SIR!!
MG: See, now that takes balls!!

lol 

LOL!