U.S. Air Force Capt. Nate Arkwood joins approximately 260 students from North Charleston Elementary School for a bag lunch at Joint Base Charleston, S.C., May 26, 2010. The students visited the base as an educational reward for completing the "Revving It Up For Reading" program. This also provided a mentoring opportunity for the base's military members. The reading program encourages children to read at least 25 books throughout the school year. Captain Arkwood is a C-17 pilot with the 701st Airlift Squadron. (U.S. Air Force Photo/Airman 1st Class Lauren Main)

U.S. Air Force Staff Sgt. Steven Stone assists a North Charleston Elementary School student in operating a robot at the Fitness and Sports Center on Joint Base Charleston, S.C., May 26, 2010. During the demonstration, Airmen trained in explosive ordnance disposal educated students about their professions and explained their deployed duties. Sergeant Stone is an EOD technician with the 628th Civil Engineer Squadron. (U.S. Air Force Photo/Airman 1st Class Lauren Main)

U.S. Air Force Senior Airman Brandon Edwards demonstrates the honed sensing abilities of a military working dog to approximately 260 students from North Charleston Elementary School at Joint Base Charleston, S.C., May 26, 2010. The base visit was an educational reward for nearly 75 percent the school's grade K-5 students who completed the "Revving It Up For Reading" program. Airman Edwards is a working dog handler with the 628th Security Forces Squadron. (U.S. Air Force Photo/Airman 1st Class Lauren Main)

U.S. Air Force Staff Sgt. Clifford Hartley handles a military working dog during a demonstration of the dog's sensing abilities for North Charleston Elementary School students at Joint Base Charleston, S.C., May 26, 2010. During the demonstration, the dog followed commands given by his handler and correctly identified which suitcase contained a hazardous explosive device. Sergeant Hartley is a working dog handler with the 628th Security Forces Squadron. (U.S. Air Force Photo/Airman 1st Class Lauren Main)