Airmen from the 352nd Battlefield Airmen Training Squadron Detachment 1, Second Air Force and 81st Training Wing leadership join a team of Special Tactics Airmen ruck marching through Biloxi, Mississippi March 1, 2019. Twenty Special Tactics Airmen ruck from Medina Annex at Lackland Air Force Base, Texas, to Hurlburt Field, Florida, to pay tribute to Staff Sgt. Dylan J. Elchin, who was killed in Afghanistan on Nov. 27, 2018, and 19 other Special Tactics Airmen who have been killed in action since 9/11. The ruck march takes ST members across five states and 830 miles. (U.S. Air Force photo by Master Sgt. Ryan Crane)