Part 65, page 85

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OPTIONAL FORM NO. 10 MAY 1962 EDITION GSA FPMR (41 CFR) 101-11.8 UNITED STATES GOVERNMENT Memorandum

TO : SAC, SEATTLE (164-81) (P) DATE: 11/30/71

FROM : SA THOMAS J. MANNING SUB — E. F. U. SUBJECT: UNKNOWN SUBJECT; NORTHWEST AIRLINES FLIGHT #305, PORTLAND TO SEATTLE, 11/24/71 CAA - HIJACKING; EXTORTION OO: SEATTLE

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Investigation at Longview RA territory, 11/30/71, consisted of contacts with all hospitals, doctor's clinics, in Clark, Cowlitz, Lewis, and Wahkiakum counties, all negative. Doctors and other medical locations being circularized with descriptive information and composite photograph by interested medical authorities.

A four seater helicopter of the Bonneville Power Administration conducting air search in an area 20 X 20 miles with negative results. The three-day use of helicopters and fixed wing aircraft in the prime search area in the opinion of the writer has been completed. No information of value has been uncovered in this aerial surveillance.

Information concerning [REDACTED], has been previously furnished in teletype sent to the Las Vegas Division this date. Close observation of terrain features in the search area composed of 500 square miles and has been flown for three days consists of the following:

Around Lake Merwin in the northern most part of the search area there is a ridge line which averages 1700 feet, running in an east to westerly direction with dense timber, extremely heavy undergrowth and few clearings. Proceeding north and east of this location into Cowlitz County the terrain becomes more timbered with heavy growth of underbrush along the flight path

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[partially legible stamp] 16 N-81- [illegible] INDEXED SEARCHED... [illegible] FILED [illegible] NOV [guess: 30] C 1971 FBI - SEATTLE

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(3) - Seattle TJM/rse (3)

Buy U.S. Savings Bonds Regularly on the Payroll Savings Plan DB Cooper-27315