U.S. Air Force Staff Sgt. Andrew Green puts on his gunner's belt, a personal protective device that secures him inside a HH-60 Pave Hawk helicopter during exercise Angel Thunder on Davis-Monthan Air Force Base, Ariz., April 15, 2010. Green is assigned to the 55th Rescue Squadron. U.S. Air Force Staff Sgt. Andrew Green puts on his gunner's belt, a personal protective device that secures him inside a HH-60 Pave Hawk helicopter during exercise Angel Thunder on Davis-Monthan Air Force Base, Ariz., April 15, 2010. Green is assigned to the 55th Rescue Squadron. SHARE: Download: Full Size (1.89 MB) Tags: Photo Essays Credit: VIRIN: 459992-V-UVE42-058.jpg Photo Gallery