I've been thinking about the North Face jacket mom mentioned a couple of days ago......she didn't come right out and say it but, I'm assuming he was seen wearing one in the store video tape and/or possibly an employee(s) remembered that detail. I didn't think too much of it at the time she mentioned it but, today it dawned on me......why the heck would he be wearing a jacket in July? If NC weather is anywhere near like it is here......it's too dang hot for a jacket, even at night.
I know it was discussed about him wearing long sleeve shirts in summer but then I think we pretty much came to the conclusion maybe it wasn't that unusual since we noticed, in photos of the detectives coming out of the Cooper's residence, that they too had on long sleeves.
In regards to wearing a jacket on a summer night.......maybe he was trying to cover up something after all......especially if his arms were scratched up before he started searching for her.