Staff Sgt. Yoendri Reinosa, an air traffic controller assigned to the 28th Operations Support Squadron, ensures an aircraft takes off safely at Ellsworth Air Force Base, S.D., Nov. 16, 2016. The job can be a challenge because controllers work with such a limited airspace, standing at five miles in radius surface up to 5,000 feet main sea level. (U.S. Air Force photo by Airman 1st Class Donald C. Knechtel)