Army, Air Force, and Marine Generals were standing in front of a rappelling tower with a Navy Admiral. The Air Force General says to the others,
"My men are the most courageous of the Armed Forces."
"Ha!", said Army, "My men are the most courageous and I'll prove it." Army calls a Private over from the tower.
He tells the Private, "I want you to jump off that tower- no rope, no parachute."
"Yes, Sir!!!", the Private yells and proceeds to climb the tower. The Private walks to the edge, yells "Hoo-ahh!", and jumps off the tower. He is killed instantly upon impact.

"That's nothing," the Air Force General said, bored. He calls a Senior Airman over.
"Son, I want you to jump off that tower- no rope, no parachute. And I want you to do it with style."
"Yes, Sir!!!", the Senior Airman yells. He climbs to the top of the tower, walks to the edge and jumps. He executes a swan dive that would make Greg Louganis proud, hits the ground and dies on impact.

"Hmmph," the Marine growled. "Ya'll obviously forgot the Marine Corps was here", he said (yelling "Marine Corps!" as all Marines tend to do.) He calls a Lance Corporal over.
"Marine, I want you to jump off that tower and make the Corps proud!"
The Corporal yells, "Ooh-rah!", by way of response and runs to the tower. He grabs an M-60 and ammunition belt on the way and wraps the belt around himself in the Pancho Villa style. He climbs the tower and walks to the edge. Upon reaching the edge, he throws two grenades into the air, yells "Semper Fi Do or Die!", and jumps off. He starts shooting the M-60 in mid-air, clipping treetops and yelling the entire way down. His impact is obscured by the two exploding grenades. When the smoke clears, only little pieces of the Marine are left.

The others are impressed and nod their heads in admiration. Then the Admiral says,
"That's nothing". The others turn to face the Admiral, their faces in disbelief. The Admiral calls a Seaman over who was cleaning latrines.
"Son, I want you to jump off that tower- no rope, no parachute."
The Seaman looks the Admiral in the face and says, "Kiss my a**!" As the Seaman walks off, the Admiral turns to the others and says, "Now THAT'S courage!"