Hundreds of Special Tactics Airmen, trainees, and supporters perform memorial pushups to kick off the Special Tactics Memorial March Feb. 22, 2019, at Lackland Air Force Base, Texas. Twenty Special Tactics Airmen with the 24th Special Operations Wing are rucking 830-miles from Medina Annex at Lackland Air Force Base, Texas to Hurlburt Field, Fla., to pay tribute to Staff Sgt. Dylan J. Elchin who was killed in Afghanistan on Nov. 27, 2018, and in honor of the other 19 Special Tactics Airmen who have been killed in action since 9/11. (U.S. Air Force photo by Senior Airman Ridge Shan)