Recent developments in the aerospace industry have brought attention to the transformation of former commercial aircraft into critical military assets. Five Boeing 747 passenger jets previously operated by Korean Air have been acquired by the Sierra Nevada Corporation, a contractor for the US Air Force's strategic command and control military aircraft, commonly referred to as 'Doomsday' planes.
The Doomsday planes, officially known as E-4B 'Nightwatch,' serve as airborne command centers for the US military in the event of a national emergency, such as nuclear war, where ground-based command facilities are compromised. These aircraft are equipped to accommodate high-ranking officials, including the US president, secretary of defense, and members of the Joint Chiefs, enabling them to oversee military operations globally.