NASA, Orbital ATK and United Launch Alliance, or ULA, now are targeting launch of Orbital ATK’s seventh commercial resupply services mission to the International Space Station no earlier than Monday, March 27. The additional time allows the ULA team to troubleshoot a hydraulic issue discovered on ground support equipment needed for launch. Orbital ATK has contracted with ULA for its Atlas V rocket for the launch service, which will lift off from Cape Canaveral Air Force Station in Florida. Orbital ATK’s Cygnus cargo spacecraft is packed with 7,600 pounds of supplies and research for crew aboard the orbiting laboratory. The Atlas V and Cygnus remain secure and continue to undergo processing for launch. The encapsulated Cygnus spacecraft has been mounted to the top of the Atlas V in preparation for launch.