U.S. Army Sgt. 1st Class Timothy Hartranft, 9th Expeditionary Bomb Squadron ground liaison officer, stands in front of the 9th EBS T-Wall at Al Udeid Air Base, Qatar, Feb. 6, 2019. The GLO translates the ground units’ intent into action in the air, also known as green to blue. His job is to translate green to blue and blue to green between ground commanders and the combined forces air component commander; integrating and synchronizing air and ground operations in the U.S. Central Command area of responsibility. (U.S. Air Force photo by Senior Airman Travis Beihl)