IMAGE FEATURE: ULA’s Delta-IV Rocket Returns to Launch GPS IIF-5 Under Cover of Darkness

United Launch Alliance (ULA) successfully returned its workhorse Delta IV launch vehicle to operational service on Feb. 20, 2014, with the rousing 8:59 p.m. EST liftoff of a key mission to insert the Global Positioning System (GPS) IIF-5 satellite into a medium orbit, some 11,047 nautical miles (20,460 km) above Earth. Photo Credit: John [...]