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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
transformers, and common mode suppression transformers for each Sensitive Command Network (SCN)/ Sensitive Information Network 151 (SIN) circuit pair. (U)
Boeing ECP 1141 dash 1 modifies the cable assembly set (launcher) by revising wiring to provide protection to Voice 152 Reporting Signal Assemble (VRSA) Channels 26 and 27. (U)
Boeing ECP 1141 dash 2 made anothermodification to the interconnecting box, by adding two isolation relays and reroutes 153 wiring to connect relays into VRSA monitoring circuits. (U)
The FCIR, MCL will provide for alteration of sensing at RPIE and of monitor circuits to re-establish correlation of sensing and monitor reporting. $ ^{154} $ (U)
Last quarter, the Wing's proposal for the removal of the Movement Security Alarm System of Re-entry vehicles G&G vans was agreed with by COAMA engineers. This proposal was sent to Headquarters, SAC for concurrence. 155 (U)
Headquarters, SAC in a message to OOAMA concurred with the Wing's proposal. It stated that the Movement Security System on Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 88 pages are in the text index: search them above, or from the library's search.