![](http://www.alamy.com/thumbs/6/222640B3-683A-4E41-B061-8751B8883B37/PEWMR5.jpg)
Command Sgt. Maj. Harold E. Dunn IV, command sergeant major of the 20th CBRNE Command, relinquishes responsibility during a ceremony at Aberdeen Proving Ground, Md., Feb. 4.
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Keywords: aberdeen, apg, cbrne, ceremony, csm, eod, relinquishment