OFFUTT AIR FORCE BASE, Neb. - Staff Sgt. Joel Therrien, a military working dog handler with the 55th Security Forces Squadron, walks down Offutt's Bravo ramp while doing a routine sweep of the fence line with Military Working Dog Dasty, a Belgian Tervuren, Dec. 1. Dasty is certified by trainers from Lackland AFB to sniff out explosives. Military working dog teams have led explosive searches for such recent distinguished visitors as the Secretary of Defense, Vice President, First Lady and countless other base visitors and public events. U.S. Air Force Photo by Josh Plueger (Released)