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OPTIONAL FORM NO, 10 } 9010-108-05 } UNITED STATES GOVERNMENT Memorandum * SAC, SEATTLE (164-61) (P) pate: 12/4/71 FROM : SA THOMAS J, MANNING Sate S Ba ReEIe SUBJECT: UNSUB; Northwest Airlines Flight 305, AAG Portland to Seattle, 11/24/71 ah y jo CAA = HIJACKING , ) pd’ / 0O: Seattle [b 4 b6 b7¢ b7D It was noted that the area[ number b6 of airfields and these are -re r sized to small private strips and there is a b7c lot of air traffic by small planes, Further it is known the b7D writer that both the state rol and the US Amy have helicopters flying frequently due to its proximity to IS 5 which is a min ng Jine for such craft. No other informtion of va re the aircreft bé and in view of the traffic-in the air 4% is not possible b7C to ae the aircraft he mentions an er investigation is not warranted b7D in the y — \elh &] Bae (2) tou/ | Mtry hy | DB Cooper-3653 —