Maj. Gen. Hoo Cher Mou, Chief of the Republic of Singapore Air Force, departs in a UH-1N helicopter for tour of Washington, D.C. from the 1st Helicopter Squadron assigned to Joint Base Andrews, Md., Oct. 20, 2014. Mou is visiting U.S. Air Force key programs and receiving briefings from Air Force leaders as a mean to strengthen the coalition relationship. (U.S. Air Force photo/Airman 1st Class Ryan J. Sonnier)