4/26/2013 - SPANGDAHLEM AIR BASE, Germany – U.S. Air Force Senior Airman Shayne Kusserow, 606th Air Control Squadron vehicle maintenance technician from Las Cruces, N.M., places concertina wire along the perimeter of a bare base during a combat readiness training course April 16, 2013. Combat readiness training is designed to educate and prepare 606th ACS Airmen for deployment operations. The concertina wire is just one defensive tactic used to deter enemies in a potentially hostile environment. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

4/26/2013 - SPANGDAHLEM AIR BASE, Germany – U.S. Air Force Airman 1st Class Ryan Maxwell, 606th Air Control Squadron material management technician from Yorktown, Va., demonstrates the low-crawl technique at a combat readiness training course April 18, 2013. Those who graduate CRT become experts in deployment planning and implementation, weapons handling, preventive medicine, personal hygiene, site security, Law of Armed Conflict, use of force, enemy prisoners of war handling and counter improvised explosive device principles. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

4/26/2013 - SPANGDAHLEM AIR BASE, Germany – U.S. Air Force Airman 1st Class Ryan Maxwell, 606th Air Control Squadron material management technician from Yorktown, Va., aims down the sights of an M16 rifle during a combat readiness training course April 20, 2013. Students were immersed in scenarios almost immediately and expected to perform at a high level of competency from the start. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

4/26/2013 - SPANGDAHLEM AIR BASE, Germany – U.S. Air Force Senior Airman Andrew Pelkey, 606th Air Control Squadron power production technician from Altus, Okla., plays dead with other members of a combat readiness training course April 20, 2013. Airmen learned how to defend the base against opposing forces throughout the training. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)

4/26/2013 - SPANGDAHLEM AIR BASE, Germany –U.S. Air Force Tech. Sgt. Nicholas Rowland, 606th Air Control Squadron radio frequency transmission technician from Fort Walton Beach, Fla., tackles U.S. Air Force Staff Sgt. Tyler O’Mally, 606th vehicle maintenance technician from Houston, to the ground during a combat readiness training course April 20, 2013. Skills taught during CRT directly apply to operations down range and help Airmen learn how to react to real-world scenarios in a controlled environment. (U.S. Air Force photo by Airman 1st Class Gustavo Castillo/Released)