The Air Force will launch the National Reconnaissance Office’s (NRO) NROL-65 satellite today around 1:52 p.m. EST from Vandenberg AFB, Calif., according to the service.

The launch will take place on one of United Launch Alliance’s (ULA) Delta IV heavy rockets. NROL-65 will be ULA’s eighth launch in 2013 and the company’s 74th overall, according to ULA. The mission will be the 24th Delta IV flight since the vehicle’s inaugural launch in 2002 and the second time the Delta IV heavy has launched from the West Coast. ULA said Monday in a statement the L-2 forecast shows a 70 percent chance of favorable weather conditions for launch.

ULA’s Delta IV rocket. Photo: ULA.

ULA is a joint venture of Lockheed Martin [LMT] and Boeing [BA].