For the fifth time in four years, a massive U.S. Navy satellite will launch atop an Atlas 5 rocket on Friday to finish the military’s new $7.7 billion mobile communications framework 22,300 miles in space.

Military officials in charge of the Eastern Range at Cape Canaveral project more than 50 launches from Florida’s Space Coast this year, with SpaceX responsible for most of the launch activity, the vice commander of the 45th Space Wing said this week.

United Launch Alliance is preparing an Atlas 5 rocket to boost an undercover satellite into orbit for national security later this month.