Prometheus was the first, and for a long time the only, deep-space battleship built by the Tau'ri. The ship was operated by the United States Air Force, and her crew consisted of Air Force personnel. Operationally, however, Prometheus fell under the purview of the Office of Homeworld Security. Prometheus used Asgard technology in her hyperdrive engine and shields (There may be other uses of Asgard technology installed). This technology was fitted by the Asgard in return for Earth's help in fighting the Replicators. She also relied on some Goa'uld technology, most notably the Transportation rings.
Since the ship's destruction in 2006, Prometheus has remained the sole 303-class ship to be constructed, the planned BC-303 series having been rendered obsolete by 304 battlecruiser, an altogether superior vessel.