The IBM 473L Command and Control System (473L System, 473L colloq.) was a USAF Cold War "" with computer equipment at The Pentagon and, in Pennsylvania, the Alternate National Military Command Center nuclear bunker. Each 473L site included a Data Processing Subsystem (DPSS), Integrated Console Subsystem (ICSS), Large Panel Display Subsystem, and Data Communications Subsystem (Automatic Digital Network interface: "AUTODIN Data Terminal Bay"). The "System 473L" was an "on-line, real-time information processing system designed to facilitate effective management of USAF resources, particularly during emergency situations" e.g., for: "situation monitoring, resource monitoring, plan evaluation, plan generation and modification, and operations monitoring". In 1967, the 473L System was used durin