ANDREWS AIR FORCE BASE, Md. -- Airman 1ST Class William Daniels, 89th Communications Squadron global network operations center radio operator trainee, left, studies high frequency global customer call signs, as Senior Airman Justin Gomes, 89 CS radio operator, center, performs a high frequency radio check, while Senior Airman Jonathan Hays, 89 CS high frequency supervisor, observes at one of 13 high frequency global stations Jan. 12. The 89 CS utilizes a high frequency global communications system to provide rapid, reliable, non-dedicated secure, non-secure voice or data communications support to the president, cabinet members, Department of Defense agencies, aircraft, and U.S. ships of during peacetime, contingency operations and war. (U.S. Air Force photo/Bobby Jones)