President Barack Obama steps off of Air Force One as he arrives at MacDill AFB, Sept. 16. The president received an ISIL/ISIS strategy brief from Army Gen. Lloyd J. Austin III, command U.S. Central Command, spoke to troops stationed aboard MacDill Air Force Base, and visited students at Tinker Elementary School here during his visit. (USCENTCOM photo by Staff Sgt Liliana Moreno, USAF)