The National Reconnaissance Office launched its fifth proliferated architecture mission Saturday from the West Coast at Vandenberg as part of the agency's ongoing efforts to construct the U.S. government's largest-ever satellite constellation.

The NROL-126 mission blasted off from Space Launch Complex 4 East at 3:10 a.m. on Nov. 30 aboard a SpaceX Falcon 9 vehicle, conducted by the NRO, in partnership with U.S. Space Force's Space Launch Delta 30 and SpaceX.

Also aboard the rocket were 20 Starlink satellites, SpaceX confirmed via X. All satellites were deployed to low-Earth orbit.

"Congratulations to #TeamV & SpaceX on this evening's launch from the Vandenberg Spaceport," Vandenberg officials posted to social media, noting the mission marked the base's 46th launch and missile test this year.

The last of such missions -- the NROL-167 -- successfully launched on Oct. 24 as part of the agency's efforts to diversify its operational satellite constellation. The technology supports U.S. intelligence, military, civil, and allied partners by providing access to intelligence, surveillance, and reconnaissance systems.

Approximately a half dozen launches supporting NRO's proliferated architecture are planned for 2024, with additional launches expected through 2028, the agency confirmed.

Just days later on Tuesday, early reports suggest SpaceX is gearing up for another Falcon 9 mission from the West Coast. A Starlink mission from Vandenberg's Space Launch Complex 4 East is slated for Tuesday, Dec. 3, with the launch window opening at 4:29 p.m.

Following stage separation, the first stage booster will land on the Of Course I Still Love You droneship, to be stationed in the Pacific Ocean for later retrieval.