Vulcan is a heavy-lift launch vehicle that ULA is developing to meet the demands of the NSSL competition and launch program. The rocket is ULA's first launch vehicle design, which is adapting and evolving technologies that were developed for the Atlas V and Delta IV rockets. Vulcan is intended to undergo the human-rating certification process to allow the launch of crew in a vehicle such as the Boeing Starliner or a crewed version of the Sierra Nevada Dream Chaser. Vulcan will have a maximum liftoff thrust of 3.8 million pounds and carry 56,000 pounds to low Earth orbit, 33,000 pounds to a geo-transfer orbit, and 16,000 pounds to geostationary orbit with a heavier payload than any currently available single-core rocket.