My two cents on Dona and the weather:
Dona was a true creature of the Cooper Vortex. Everything she said about Norjak she said with authority - she was never open to a discussion about what she saw, heard, or was told. Period.
That said, she was a kind and generous person. I liked her, and I loved her parties.
As for the weather, Dona - and others - say it was hellacious. Maybe it was for a few moments as a storm cell moved through.
Did she hear a jet plane? Maybe. But unlikely. 305 at 4K? Maybe. But unlikely - even the feds say 305 was further west, approaching Battleground and at 10K. The F-106s? Maybe. But unlikely, as they were climbing to 20K as per Cliff Ammerman's statements.
Lastly, in general Dona gave kinda-useful, kinda-truthful information about Norjak. Meyer and I spent half an afternoon chasing down her claims on the Amboy chute, to no avail. BTW: getting from the Arial Tavern to Amboy is a long-haul. Finding a bridge across the Lewis is tough - either drive back to Woodland, or head east and wind one's way through the Yale Valley. About an hour either way. Yet, Green Mountain, the alleged landing site of the Amboy chute and DBC, is but a stone's throw from the back door of the tavern across the Lewis River valley.
Did DB Cooper actually come to the Tavern? Dona said he did.
Did Dona confuse Mike Cooper with Dan Cooper? She might have. I know I was confused when she told me about Mike, as I hadn't seen the full passenger list, yet.