Tail Gun Shoot Marine Corps Sgt. Austin J. Otto participates in an MV-22 Osprey tail gun shoot during Integrated Training Exercise 3-17 at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., May 15, 2017. Otto is a crew chief with Marine Medium Tiltrotor Squadron 363. Marine Corps photo by Lance Cpl. Becky L. Calhoun SHARE: Download: Full Size (3.47 MB) Credit: Lance Cpl. Becky Calhoun VIRIN: 170515-M-XO599-651C.JPG Photo Gallery