Defense & policy · first seen 10 Sep, updated 10 Sep
SpaceX launches classified mission for the US Space Force from California
The mission, dubbed USSF-153 mission, launched an undisclosed number of satellites for the U.S. Space Force. Liftoff from pad 4E at Vandenberg Space Force Base happened at 8:42 a.m. PDT (1142 a.m. EDT / 1542 UTC).
Summary from Spaceflight Now.