DOOR GUNNER Marine Corps Sgt. Travis Bell scans for threats from a UH-1Y Huey helicopter during Integrated Training Exercise 2-15 on Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Feb. 18, 2015. Bell is a door gunner assigned to Marine Light Attack Helicopter Squadron 169. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 922695-L-AAU33-511.jpg Photo Gallery