Looking for anyone that was stationed on Firebase Powder Ridge in 1971 when 1st Calvary was disbanded to come to the US. Anyone that can remember an injury I sustained in May 1971 when we were clearing and lz to remove weapons, ammo, and explosives. When doing this, there was another explosion that sent a tree where I was located at when I set off the explosives. Especially the guy that said it should have been him not me. Anyone that was in C Company or A Company or anyone in infantry affiliated with these companies at this time.