Photos: Thursday’s Atlas 5 rollout to launch pad

United Launch Alliance will salvage the main engines through a mid-air recovery plan and reuse them again aboard the company’s new Vulcan rocket, saving 90 percent in booster propulsion costs, the company announced Monday.

A new infrared reconnaissance satellite for one of the United States’ highest priority space programs — making early detection of enemy missile launches — was successfully delivered into orbit Friday by an Atlas 5 rocket.

A Boeing-built communications satellite lifted off at 7:21 p.m. EDT (2321 GMT) Monday on top of a SpaceX Falcon 9 rocket from NASA’s Kennedy Space Center in Florida. The spacecraft will add to Inmarsat’s Global Xpress network linking airplanes, ships and other mobile terminals with broadband Internet and data services.