Master Sgt. Joseph Haughton, U.S. Air Force Band’s Celtic Aire ensemble vocalist, plays a guitar during a Memorial Day weekend concert at the National Harbor in Fort Washington, Md., May 27, 2017. This performance kicked off their Summer Concert Series that includes free shows open to the public every Saturday at the National Harbor where people can enjoy traditional and folk music honoring service members. (U.S. Air Force photo by Airman 1st Class Valentina Lopez)