not a test. A state of national emergency exists. This station will now go off the air. Please tune your dial to a station on the Emergency Broadcast System for a message from the President. This is not a test. This is not a test." Instructions were then given for how to locate the EBS station broadcast serving the area. Although the reason for the alert wasn't directly mentioned by announcers, the activation of the EBS for a nationwide emergency was normally reserved for a warning of an attack on the United States. All broadcast stations had heard the tone, followed by a teletype message with the authentication word that said "Message authenticator: Hatefulness — Hatefulness. This is an Emergency Action Notification (EAN) directed by the President. Normal broadcasting will cease immediately. All stations will broadcast EAN Message One preceded by the attention signal, per FCC rules. Only stations holding NDEA may stay on air in accord with their state EBS plan." Thirteen minutes later, news services informed broadcasters that a mistake had been made and that stations should disregard the order to go off the air, and the official cancel notice did not get sent until 10:30 Eastern time with the statement "Message authenticator: Impish- Impish. Cancel message sent at 09:33 EST. Repeat Cancel message sent at 09:33 EST." The mistake was traced to a long-time civilian employee of NORAD who mistakenly loaded the wrong tape when sending the message to all stations. He told reporters "I can't imagine how the hell I did it." The FCC later reported that a survey showed that only 8 percent of the nation's TV and radio stations went off of the air as directed by the alert; of the 92% that kept broadcasting, one-third said that they questioned whether the message was valid and another one-third didn't see the alert until after it had been canceled. February 21, 1971 (Sunday) Tornadoes killed 123 people as nineteen storms raged across the Deep South part of the United States, primarily in the state of Mississippi, but also in northeastern Louisiana and southern Tennessee. Hardest hit was the town of Inverness, Mississippi, with the black residential section destroyed. Pakistan's President, Agha Mohammed Yahya Khan, announced the firing of his 10-member cabinet of ministers, 11 days before the nation's 313-member National Assembly was to meet in Dacca in East Pakistan, which had more members than Yahya