A C-130H, from the 145th Airlift Wing in Charlotte, N.C., arrives Aug. 9, 2011 in Sihanoukville, Cambodia for a subject-matter expert exchange here between U.S. and Royal Cambodian armed forces about airfield operations. The exchange was part of Pacific Angel 11-1, which partners U.S. and Cambodian military and civilian personnel to provide medical, dental, optometry and engineer programs to local Cambodians, as well as airfield operations subject-matter expert exchanges. (U.S. Air Force photo/Staff Sgt. Christopher Boitz)