Airmen from the 100th Security Forces Squadron hold a photo of Airman 1st Class Elizabeth Jacobson during the 100th SFS Memorial Ruck March during National Police Week at RAF Mildenhall, England, May 13, 2020. Jacobson was killed in 2005 while deployed to Iraq and was the first female U.S. Airman killed in the line of duty in support of Operation Iraqi Freedom, and the first Air Force Security Forces member killed in conflict since the Vietnam War. (U.S. Air Force photo by Senior Airman Brandon Esau)