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This Black Vault release contains the Air Force's 2001 response from the 341st Space Wing FOIA office at Malmstrom AFB, Montana, to a request about the 16 March 1967 Echo Flight missile shutdown, with excerpts from 341st Strategic Missile Wing histories covering 1967 to early 1968. The histories say all ten Echo Flight launch facilities lost strategic alert almost simultaneously. Investigators could not find a logical cause and found rumors of UFOs near Echo Flight to be unfounded.
“Seattle”11 pages
1 NO. OF THE DESIGNATION WO. NUMBER LAST DATE EPNO TITLE IV. R FORALC. 2 CONTACT DETAILS 3 CONTACT DETAILS CONTACT SPECIALIST 4 NAME OF PARTY PRESENTING PHOTO PART NO. OF THE CONTRACT See Dash No. 10 APPLICED 5 RULE OF CHOICE Provide Protection for Monitor Lines Cor. 721 Channels 26 and 27. 6 A. Background: 1. In response to 0°04 direction Contractor conducted studies of Launch Facility vulnerability from the Soft Support Building (CONE Project Control Number 29-1-1644, VIP 0066-1900). These studies led to CONE direction, via letter CONEC dated 11 February 1965, that an ECP be submitted. 2. Contractor's response, letter 2-1102-56-070, was submitted 19 May 1956. (Continued on Page 3) 8 To prevent equipment damage and/or failure from overvoltages below 2000 volts. If this change is not incorporated the monitor lines for V871 channels 26 and 27 will not be protected against overvoltages below 2000 volts. 9 See Dash No. 1 10 PROCEDURE FOR PRODUCTION See Dash No. 1 11 CONTRACT PRESENTATION See Page 12 RECOVERY FOR PRODUCTION See Dash No. 1 13 EXPLANATION
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