Twenty special tactics Airmen began an 11-day ruck march at 2:00 a.m. Feb. 22 at Joint Base San Antonio-Lackland Medina Annex, Texas, and will be traveling 830 miles to Hurlburt Field, Florida. The Airmen are rucking to pay tribute to Staff Sgt. Dylan Elchin, who was killed in Afghanistan Nov. 27,