What Did Divers Find In A Bag Tossed In A River?

I'e always been amazed by urban explorers and treasure hunters.  Going into places that used to be bustling with life, but are now rarely visited.

Recently, Jake and Tristan went diving into a river in Florida.  They spend most of their time diving below a bridge that is part of a busy road.

They found everything from a tool used to roll logs, to a boat part (or, a bomb?), and even a gold ring.  But, the coolest thing they found was a black duffel bag loaded with stuff.   What did they find?  Watch the video to see.