That picture gives me chills.
I know many people have analyzed the car at the SWFA and think it's a thief casing the store. Could be! But I think it's SP (and perhaps a partner) who stopped by that parking lot to "regroup" and go over the plans, etc. before heading to the church.
When the car turns off the lights upon entering the lot, I think it was to be less noticeable. When the car then encounters vehicles by the loading dock and turns on the headlights, there is speculation I've seen that the person is then trying to look "normal," not like a sneaky thief.
As someone who is not a thief, I think the headlights were turned on out of habit to see better, to see what the other cars were, etc. I see the headlights as the opposite of someone being stealth, but someone who doesn't have criminal habits.
Same with sitting under the lamplight in the parking lot. I would park there if I had to read something, look at a map, list of items, check messages, etc. I'd rather sit under the light than turn on the dome light. Parking under the lamplight doesn't seem like something an experienced criminal would do.
When the driver turns on the blinker out of habit when exiting the lot when a blinker wasn't necessary, that seems, imo, more likely to be a woman and likely not a criminally-minded one. speculation.
I do think the person at the store could very well be SP, but I don't think it's a perp spending time in the rain looking for a place to burglar. Speculation, of course.
Brainstorming.
jmo