A team of engineers and technicians help guide the Cygnus spacecraft, built by Orbital ATK, into position atop its service module inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida. The spacecraft then was mated to its service module, which includes the propulsion system and power-producing solar arrays. The Cygnus, which flies without a crew, is to launch atop a United Launch Alliance Atlas V rocket carrying equipment, supplies and research to the International Space Station.