Lived on Guam as a kid till my 12th Bday. this was back in the years up to '59. As kids it was an endless treasure hunt looking for "treasures". Many of which we neglected to tell out parents about. But we did make friends with some navy guys responsible for ordnance disposal who were very nice to me because of my older sister. At one time I had an amazing collection of US and Jap hand grenades, mortars including a knee mortar launcher, (all safely deactivated) by them. Also a nanbu machine gun, rifles and gear. I stupidly gave it all away when I went to college to a LEO friend of the family. I can't imagine how much that stuff would be worth today.