The mission will launch the final 10 Iridium Next satellites to space from Vandenberg, culminating a campaign that began with the first set of spacecraft heading to space January 14, 2017.
Friday's launch was SpaceX's eighth and final in a series for Iridium, which is headquartered in Virginia.
The satellites will complete the second-generation constellation to provide voice and data communication anywhere on the globe.
The last planned SpaceX rocket launch in December - not to be confused with United Launch Alliance's thwarted attempt to launch a Heavy IV Delta rocket - was delayed when SpaceX informed Iridium they needed extra time to prep for the launch.
To watch the launch, check out www.spacex.com/webcast approximately a half hour before the expected launch.
For added fun, you can also tune into Iridium's launch soundtrack, featuring music suggestions cultivated from fan suggestions.
The Falcon 9 launch pad can be seen from several vantage points around the Lompoc Valley, including at the intersection of Moonglow and Stardust roads plus the peak of Harris Grade Road.