Copperhead CLGP axial section
U.S. Army
<a rel="nofollow" class="external text" href="https://babel.hathitrust.org/cgi/imgsrv/download/pdf?id=uc1.b4469928;orient=0;size=100;seq=715;num=3415;attachment=0">Department of Defense authorization for appropriations for fiscal year 1983 : hearings</a>, Statement of Maj. Gen. Lawrence F. Skibbie, Director of Combat Support Systems, Office of the Deputy Chief of Staff for Research, Development and Acquisition, Page 3415