WORKING DOG U.S. Marine Corps Lance Cpl. Joseph Nunez and Viky, a military working dog trained to detect improvised explosive devices, search a compound for weapons during Operation Grizzly in Helmand province, Afghanistan, July 18, 2013. Nunez is assigned to Fox Company, 2nd Battalion, 2nd Marine Regiment. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 395423-S-XTN88-840.jpg Photo Gallery