The 375th Delta rocket doubled the size of the Air Force’s “neighborhood watch” program today with the successful launch and deployment of two surveillance satellites into the vast geosynchronous belt of spacecraft around the planet.

SpaceX’s fifth launch for Iridium’s upgraded mobile communications network occurred at 7:13 a.m. PDT (10:13 a.m. EDT; 1413 GMT) Friday from Vandenberg Air Force Base, California. The Falcon 9 rocket flew with a reused first stage, but SpaceX did not intend to recover the booster after Friday’s launch.

SpaceX’s final Falcon 9 launch of the year carried a classified payload for the National Reconnaissance Office, the U.S. government’s spy satellite agency. SpaceX aborted a launch attempt Thursday morning to assess a second stage sensor reading, but the Falcon 9 successfully lifted off from the Kennedy Space Center at 9 a.m. EST (1400 GMT) Saturday. The rocket’s stage landed back at Cape Canaveral eight minutes later.