Cpl. Michael Foster and his military working dog, Nero, play before conducting detection training aboard Marine Corps Base Hawaii, April 14, 2015. (U.S. Marine Corps photo by Cpl. Brittney Vella/Released) - Cpl. Michael Foster and his military working dog, Nero, play before conducting detection training aboard Marine Corps Base Hawaii, April 14, 2015. (U.S. Marine Corps photo by Cpl. Brittney Vella/Released)