As a new member I would add just one caution. Be careful putting a locked ammo can in an urban public area or anywhere with a lot of foot traffic. As a former member of a bomb squad I can assure you that such an item will get the squad called out. If you do place such a cache be sure that it is clearly marked and has a phone number so that the police can call you to check out the item. Even with all of that I almost guarantee that the cache will be "explosively" opened!!
Oh, by the way, I’m really enjoying geocaching!!
