Staff Sgt. Jonathan Torres checks the engine oil on an A-10 Thunderbolt II U.S. Air Force Staff Sgt. Jonathan Torres checks the engine oil while conducting a post-flight check on an A-10 Thunderbolt II aircraft at Eielson Air Force Base, Alaska, on June 18, 2012. Torres is a crew chief with the 51st Aircraft Maintenance Squadron. SHARE: Download: Full Size (0.02 MB) Credit: VIRIN: 581369-W-ENV75-433.jpg Photo Gallery