Staff Sgt. Jessie Mendez and his military working dog Robby prepare for an Expeditionary Combat Skills Training course. U.S. Air Force Staff Sgt. Jessie Mendez and his military working dog Robby prepare for an Expeditionary Combat Skills Training course at Barksdale Air Force Base, La., on Nov. 30, 2005. The course has recently integrated military working dogs to help provide a more realistic patrolling experience for the Air Force personnel involved in the training. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 459000-D-VNY12-959.jpg Photo Gallery