Sandy hook beach in NJ was loaded with ordinance...it was shut down cause someone found a grenade of some sort and took it off the beach...
Used to camp at Sandy Hook as a boy. We found some ordinance on the beach one time. Climbed to the top of the bunkers and dropped it - to see if it would go off. After a few failed attempts, we told the scoutmaster what we found, and he promptly gave it to the authorities...