MORNING MAINTENANCE Air Force Staff Sgt. Ryan Oliver inspects the rotor on a UH-N1 Huey helicopter on Malmstrom Air Force Base, Mont., Jan. 27, 2015. Oliver is a special missions aviator assigned to the 40th Helicopter Squadron. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 490311-O-YBL72-751.jpg Photo Gallery