Successful Bbutler Marine Corps Cpl. Jenna Cauble rewards her Bbutler, a military working dog, with a toy after successfully detecting harmful materials while training aboard Kadena Air Base, Okinawa, Japan, Oct. 25, 2016. SHARE: Download: Full Size (3.04 MB) Credit: Marine Corps Cpl. Allison Lotz VIRIN: 161025-M-MJ974-102.JPG Photo Gallery