Helping Hand Air Force Staff Sgt. Connor Cronin assists in the installation of new batteries on a KC-10 Extender aircraft at Travis Air Force Base, Calif., July 27, 2021. SHARE: Download: Full Size (1.84 MB) Tags: air force Credit: Heide Couch, Air Force VIRIN: 210727-F-RU983-1051Y.JPG Photo Gallery