I found what looks like an STH 10 at the Natick Soldier Systems Center but I cant tell for sure link:https://www.google.com/maps/@42.2908927,-71.3633736,3a,15y,188.05h,95.48t/data=!3m7!1e1!3m5!1sEbUkBNO3Zj7SXRlQZmymDQ!2e0!6s%2F%2Fgeo3.ggpht.com%2Fcbk%3Fpanoid%3DEbUkBNO3Zj7SXRlQZmymDQ%26output%3Dthum...