The E-4B Nightwatch is a military aircraft used by the United States Air Force. It serves as a command post and is designed to provide communication and control during nuclear war scenarios. The aircraft is based on the Boeing 747 and features advanced technology to ensure secure communications. Equipped with a variety of systems, the E-4B can operate in challenging environments and maintain contact with military leaders and forces. It is part of the National Airborne Operations Center and plays a crucial role in the U.S. military's strategic operations and emergency response plans.