The US Air Force has established a new "Doomsday" wing to enhance nuclear command and control capabilities. The development is related to the Air Force's nuclear assets, including planes that could serve as airborne command centers and intercontinental ballistic missiles, although details about the missiles' warhead capacity are unclear. The Air Force is also working on replacing its existing "Doomsday" aircraft, with a contract awarded for the new planes, which are being engineered to withstand a nuclear explosion.