Our VI has mentioned that the dog kennel people saw Barbara that morning around 8-10 am, and the neighbor captured her getting into the truck that morning around 8:15. She had been speaking with family in Hong Kong about her trip, prior to that day, and told them she'd be out of touch for a few days (during the camping trip).
It sure seems like it started out like a regular day. One kennel staff member told Dbdb that Barbara seemed a little stressed (or something like that). I think she was supposed to fly to Hong Kong on the 23rd. Then, the convenience store person told Dbdb that RT seemed a little "naggy" (irritable).
After that, it's just RT's view on what happened next. Kelbaker/HH is 2 hours from their house, plus time for convenience stop. They should have been there by 11.
Were they out on that walk from 11 am to 2:30 (when RT says he last saw her)? Temps would have been in the 90's when they started out...probably 102/103 or so by 2:30. Did she drink from his gallon of water?
I too have lots of questions for RT (and I know Dbdb has tried to get the answers - so far, no luck).