Phase I execise
SHAW AIR FORCE BASE, S.C. -- Staff Sgt. Edson Aglibut, 20th Civil Engineer Squadron, directs proper placement of a barricade during Shaw's Phase I operational readiness exercise, Sea Lion 10-01, Nov. 30. Airmen of the 20th CES place barriers to protect certain facilities as part of a module plan during Shaw's exercise. (U.S Air Force photo/Senior Airman David Minor)