The launch is scheduled for shortly after 7:20 p.m., Vandenberg Air Force base officials said in an advisory. The rocket will carry the Argentinian SOACOM 1A radar mapping satellite. Those near the base, which is near Lompoc, may be able to see quite a show as the first stage of the Falcon 9 rocket burns its rocket engines to come to a gentle landing back at the air force base, officials said. "During the landing attempt, residents from Santa Barbara, Ventura and San Luis Obispo counties may hear one or more sonic booms," according to the advisory. "