Osprey Overview An airman walks on a CV-22 Osprey helicopter before a training mission for the Air Force Weapons School at Nellis Air Force Base, Nev., Dec. 10, 2017. The airman is assigned to the 14th Weapons Squadron. The course includes almost 400 hours of graduate-level academics and combat training missions. Air Force photo by Senior Airman Kevin Tanenbaum SHARE: Download: Full Size (2.87 MB) Credit: Airman 1st Class Kevin Tanenbaum VIRIN: 171210-F-YM181-001C.JPG Photo Gallery