Members of the Armed Forces perform a nighttime fast rope training exercise from an MH-60L Black Hawk helicopter, piloted by U.S. Army soldiers from the 160th Special Operations Aviation Regiment, the same unit that flew Navy SEAL Team 6 to Osama bin Laden's compound in Abbottabad.
The night of the mission should have looked like this; the Black Hawk was supposed to briefly hover above the compound and the SEALs would slide down ropes into the open courtyard. But that's not how it happened. That night, when the first Black Hawk reached the target, it began to skitter and clipped the wall of the compound. The aviator of the Black Hawk helicopter was facing one of the toughest emergency situations. He lost his tail rotor; he had no control over the aircraft. And this aviator was able to put the aircraft on the ground very fast.
The 12 SEALS on board the downed helicopter escaped unhurt into an outer courtyard. They then had to go to Plan B; and since they had planned for Plan A, Plan B and Plan C, they were able to adapt immediately on the ground and conduct the operation even though the loud crash and explosive booms woke up the compound’s occupants.