JMO
For the theory that Gannon did make it home during the neighbor's video, this is a good explanation and video to help explain the "shadow" on the opposite side of the truck and why he may have gotten home afterall.
Its a short video and you can watch right from the beginning because he gets to explaining it soon beginning around 2:53 if you want to skip ahead to around there.
I see the shadow he is talking about and it is pretty convincing to me because it seems that nothing else should be making that small shadow.
Its not a lot to go on but it does add a little bit of evidence that maybe he did come home afterall.
Very interesting.
I'm not saying for sure that GS didn't return home from shopping.
I am saying for sure that it is impossible that that is GS's shadow.
I will also say that it is impossible that that is any kind of shadow.
I am basing this off of the position of the sun at the times of the video. It's science.
It was a cloudy day. Where is LS's shadow when she first walks out to the truck? It should be cast about 9ft out in front of her.
The spot of GS's "shadow" would not only be IN the shadow of the truck, but also IN the shadow of the house covering the driveway. How does someone cast their shadow upon two other shadows and it be visible?
The only distinct shadows in the video are directly under the vehicles....which would imply that the sun was directly overhead. This is not anywhere close to being the case. At that latitude, at that time of the year, the sun at "high noon" is only about 33 degrees above the horizon (zero degrees being the horizon, and 90 degrees being directly overhead).
Google pictures of the stauch home. Particularly note the ones with the crime scene van to ensure the same time of year. Find the "sunny" pictures where dark, distinct shadows are cast. The vehicle's shadows are not only "outlining" the entire vehicle (as in the truck video), but are cast a significant distance away from the vehicle, away from the sun (obviously). In the truck video, there are no such shadows created that day.
Also of note, in those pictures, depending on the time of day, you can see the distinct shadows of the houses that cover most of the driveways on the stauch's side of the street. Again, how are we going to see his shadow.....if he is standing in the house's shadow......that we can't see anyway because it is couldy?
In the truck video, the shadows under the vehicles are not shadows created from direct sunlight. Rather they are shadows created by the illuminated sky, or clouds, or wherever it comes from on a cloudy day.......FROM ALL DIRECTIONS. Again, this is why TS doesn't have a shadow when she walks out to the truck (and she is taller and more rotund than GS).
In the very beginning of the video, you can see the faint shadow of the truck cast out into the street. This shadow is very faint because (IMO) it is from the direct sunlight that is being partially blocked by the clouds. I mention this because at 2pm when she returns, you can no longer even see this "faint shadow." To me, this means that it is even cloudier at 2pm than it was at 10am.......hence even less likely that a person would cast a visible shadow.
Anyway, I apologize for the rant to anyone that has made it this far..... ; )
JMO