Quote Originally Posted by ray1970 View Post
I had a backpack that I used to take to gun shows to haul my purchases.

Took it as a carry on bag on a trip to Florida.

Somehow during the screening process it was flagged for "explosives".

They searched it and swabbed it with something and then they sent me on my way.

I'm definitely going to have to agree with Zundfolge.
Had the same thing happen at the airport on the way back overseas from R&R.