Duty Briefing Air Force Col. John M. Klein Jr., left, commander of the 60th Air Mobility Wing, receives a briefing from Air Force Airman 1st Class Uriel Mendoza on his duty responsibilities before participating in a military working dog demonstration at Travis Air Force Base, Calif., July 21, 2016. Mendoza is assigned to the 60th Security Forces Squadron. Air Force photo by Louis Briscese SHARE: Download: Full Size (0.91 MB) Tags: Air Force, Airmen Credit: Louis Briscese VIRIN: 160721-F-LI975-032A.JPG Photo Gallery