Members of the Hurlburt Field, Fla., motorcycle group, Sentinels of Freedom, lead 18 Special Tactics Airmen, families and coworkers through the base’s main gate as they complete an 812-mile memorial march from Lackland Air Force Base, Texas, to Hurlburt Field, Fla. Special Tactics Airmen perform this march each year that a Special Tactics Airman loses his life in defense of his country. (U.S. Air Force photo/Master Sgt. Steven Pearsall)