http://www.thebulletin.org/issues/20.../jf03burr.html
The alert began on [Monday] October 13, 1969, when U.S. tactical and strategic air forces in the United States, Europe, and East Asia began a stand-down of training flights to raise operational readiness; Strategic Air Command (SAC) increased the numbers of bombers and tankers on ground alert; and the readiness posture of selected overseas units was heightened. On [Sat] October 25, SAC took the additional step of increasing the readiness of nuclear bombers, and two days later SAC B-52s undertook a nuclear-armed “Show of Force” alert over Alaska, code-named “Giant Lance.”