I have a friend who while on a fishing trip found something bobbing around about 45 miles off the coast. This turned out to be an ammo can with live 20mm Vulcan red tip ammo in it. He is not a gun enthusiast and asked if i can find out about this ammo for him. I did some basic google searching and found some stuff but would like to know more. Also is it bad for him to have this stuff? Any info greatly appreciated.