U.S. Marine Corps Cpl. Ivan Perez, a military working dog handler, and his partner, Jack, a military working dog with Provost Marshal's Office, Marine Corps Base Camp Smedley D. Butler, pose for a photo on Camp Hansen, Okinawa, Japan, May 26, 2022. Perez and Jack, an 80-pound German Shepherd, specializing in explosives detection, have trained together for nearly a year. PMO K-9 teams are on continuous shifts on all bases in Okinawa, trained and prepared for emergencies such as suspect apprehension, pursuit attacks, building searches, field scouting, drug and explosives detection. - U.S. Marine Corps Cpl. Ivan Perez, a military working dog handler, and his partner, Jack, a military working dog with Provost Marshal's Office, Marine Corps Base Camp Smedley D. Butler, pose for a photo on Camp Hansen, Okinawa, Japan, May 26, 2022. Perez and Jack, an 80-pound German Shepherd, specializing in explosives detection, have trained together for nearly a year. PMO K-9 teams are on continuous shifts on all bases in Okinawa, trained and prepared for emergencies such as suspect apprehension, pursuit attacks, building searches, field scouting, drug and explosives detection.