Blackwater (Moyock, NC) is pretty controversial. But like them or not, they have IP-- eleven U.S. patents and patent apps, see them all here.
Consider Target System, from 5/30/2006, invented by Jim Dehart--
A target system provides a unified target solution where a plurality of targets are fixed to a base member. This base member allows, for example, easy portability of the plurality of targets as well as provides a mechanism for allowing multiple targets systems to be interconnected and interchanged.
And here's a recent book about the company.
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