U.S. Space Force set to launch classified mission Saturday from Vandenberg | Vandenberg Space Force Base

The spontaneous launch window opens 2:52 p.m. to 6:52 p.m., with a backup opportunity available at 2:38 p.m. Sunday, Aug. 16.

According to reports, this is likely a classified mission for the United States Space Force, comprised of a batch of classified low-Earth orbit satellites being launched on behalf of a U.S. government entity. 

Following stage separation, the first stage booster will return and touch town on the Of Course I Still Love You droneship stationed in the Pacific Ocean for later retrieval.

There is the possibility that residents of Santa Barbara, San Luis Obispo, and Ventura counties may hear one or more sonic booms during the launch, depending on weather and other conditions, base officials said.

This will be the 18th flight for the first stage booster supporting this mission, which previously launched NROL-126, Transporter-12, SPHEREx, NROL-57, and 13 Starlink missions. 

A live webcast of the mission will begin about 10 minutes prior to liftoff and is accessible at www.spacex.com/launches/ussf366, and via webcast on the new X TV app.

Launch dates and times are subject to change at any time due to mission requirements.