This past September, olemisscub located Thomas Spangler, the man who is identified in the FBI files as providing the FBI flight path map to them. I'd spent well over a year trying to find the guy, but olemisscub got him.
I called and interviewed Mr. Spangler who is alive and well, and quite alert considering his age. Very nice guy. Here are some takeaways from that interview:
* Capt. Spangler retired as Major Spangler in the 1980s. In November of 1971, he was stationed at McChord as a navigator for C-130s and C-141s and specialized in calculating drops.
* The day after the hijacking, he was given the map along with weather data and the time that NWA believed Cooper jumped by the unit at the SAGE blockhouse at McChord. He wasn't even allowed in the building. They met him at the door and gave him the stuff. He says that no civilian radar was used in constructing the flight path map. It came directly from the SAGE unit at McChord.
* He was tasked with creating the first drop zone for Cooper. He described the drop zone as "teardrop shaped" and put Cooper directly in the middle of Lake Merwin.
* When he was done with his drop analysis, he turned over his drop zone map along with the yellow flight path map over to the FBI. Thus, Spangler did not create the yellow flight path map, he simply used that map to create the very first drop zone map - one which we have never seen.
* He recalls that the map was given to him with the red crosses on it, but cannot recall if he or someone else drew the dark line and time stamps on it
* He had full confidence that the plot points on the map were perfectly accurate. He said the SAGE guys were air defense and did stuff like that all the time. He independently confirmed what Len Camp, the senior director at NORAD said: SAGE could differentiate between a Mode 2 and Mode 3 IFF transponder code, both in real time and in data printouts.
* He said that he recalls the sled test because he arranged for everything, but has no recollection of the men on it. He still has original photographs from the sled test along with notes regarding the case. He says he was the one who arranged the C-141 with a camera crew to fly alongside the jetliner during the sled test.
* He said he doesn't recall feeling a physical "pressure bump" on the sled test flight, but he wasn't really paying attention to that aspect.
* He had full confidence that the plot points on the map were perfectly accurate. He said the SAGE guys were air defense and did stuff like that all the time. He independently confirmed what Len Camp, the senior director at NORAD said: SAGE could differentiate between a Mode 2 and Mode 3 IFF transponder code, both in real time and in data printouts.
* After the sled test, he had little to no contact from the FBI about the case.
I certainly left out a lot of details, but we now have a much better understanding of the origin of the yellow map, and now we have to be on the lookout for the "Spangler DZ map" in the FBI files.