After a flight from the 1st Helicopter Squadron, Maj. Gen. Hoo Cher Mou shakes hands with Col. Larry Riddick, 811th Operations Group commander, on Joint Base Andrews, Md., Oct. 20, 2014. Mou, Chief of the Republic of Singapore Air Force, was given an aerial tour of Washington, D.C. on a UH-1N helicopter assigned to the 1st HS. 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)