Restored archive. The original History Commons is no longer online; this is a read-only edition of its timelines. Content is licensed CC BY-NC-SA.

History Commons Archive

Restored archive of the open-content investigative journalism project

Operation Northern Vigilance

Profile: Operation Northern Vigilance

Events (4)

September 9-11, 2001: NORAD Begins Northern Vigilance Military Operation 2001-09-09
(6:30 a.m.) September 11, 2001: NORAD on Alert for Emergency Exercises 2001-09-11
(8.46 a.m.) September 11, 2001: NORAD Operations Center Receives First Notification of Hijacking; Approves Launching of Fighters 2001-09-11
(9:00 a.m.) September 11, 2001: Northern Vigilance Operation Canceled; False Blips Purged from Radar Screens 2001-09-11