CLARK AIR BASE, Philippines -- Tech. Sgt. Mark Snider, a 353rd Operations Support Squadron security forces member, hides to ambush members of the Philippine Air Force as they attempt to clear a room here June 18. Four security forces members from the 353rd OSS conducted a six-day exchange with about 50 PAF members from over 12 different career fields during Teak Piston 09-2, a training exchange designed to enhance U.S and Philippine military training, capabilities and increase interoperability. (U.S. Air Force Photo by Tech. Sgt. Aaron Cram)