Staff Sgt. Darren Dobelman adjusts the tracks in the cargo bay of a KC-10 Extender aircraft. U.S. Air Force Staff Sgt. Darren Dobelman adjusts the tracks in the cargo bay of a KC-10 Extender aircraft at Travis Air Force Base, Calif., on June 28, 2007. Dobelman is attached to the 660th Aircraft Maintenance Squadron. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 755703-M-VRX27-147.jpg Photo Gallery