LEADING DOG A Marine and his military working dog search a landing zone as part of a simulated raid during urban operations training on Fort Pickett, Va., April 16, 2015. The Marine is assigned to Law Enforcement Detachment, 26th Marine Expeditionary Unit. SHARE IMAGE: Download Image: Full Size (0.08 MB) Photo By: VIRIN: 550623-W-YDI56-986.jpg Photo Gallery