The U.S. Air Force Honor Guard presents the colors during the U.S. Air Force Band’s Celtic Aire ensemble Memorial Day concert at the National Harbor in Fort Washington, Md., May 27, 2017. Memorial Day serves as an opportunity to pause and remember the sacrifices of more than one million Soldiers, Sailors, Airmen, Marines and Coast Guardsmen who gave their lives to secure America’s freedoms. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)