The Atlas rocket to launch four formation-flying spacecraft for NASA in March began to take shape Wednesday at the assembly building adjacent to the Complex 41 pad.

United Launch Alliance will launch the USSF-106 mission as its first flight for the U.S. Space Force using a Vulcan rocket. The vehicle will carry two satellite missions onboard.

Running several days late after a series of technical and weather delays, a Falcon 9 rocket lifted off from Vandenberg Air Force Base in California at 6:17 a.m. PST (9:17 a.m. EST; 1417 GMT) with the Spanish-owned Paz radar observation satellite and two prototype payloads for SpaceX’s planned Starlink broadband satellite network.