Maj. Harlan Zentner, U.S. Air Force Auxiliary, Civil Air Patrol, conducts preflight checks on a C-182 Cessna before departing Astoria, Ore., during Amalgam Dart 2009, June 18. Amalgam Dart is a field test of the Department of Defense's ability to rapidly deploy a total air integrated defense system in the U.S. in order to deter, detect and defeat airborne threats. (U.S. Air Force photo by Al Eakle)