Airmen from the 23rd Special Tactics Squadron jump out the back of a MH-47 Chinook Helicopter April 9, 2013, at Wynnehaven Beach, Fla. The helicopter conducts overt and covert infiltration, exfiltration, air assault, resupply and sling-load operations in a wide range of environmental conditions.

U.S. Air Force photo/Airman 1st Class Christopher Callaway