AN/TRS-2 PLATOON EARLY WARNING SYSTEM (PEWS)
U.S. Army
1981
<a rel="nofollow" class="external text" href="https://babel.hathitrust.org/cgi/imgsrv/download/pdf?id=uiug.30112075628252;orient=0;size=100;seq=520;attachment=0"><i>Infantry Magazine</i></a>, May-June 1981, Vol. 71, No. 3, Page 6