U.S. Air Force Staff Sgt. Charles Williams assigned to the 144th Security Forces Squadron, 144th Fighter Wing, California Air National Guard, guards the entrance of a simulated bunker during an operational readiness inspection in Fresno, Calif., April 2, 2011. The inspection evaluates a unit's ability to perform its wartime mission. (U.S. Air National Guard photo by Senior Master Sgt. Chris Drudge/Released)
<dl><dd>Unit: Defense Imagery Management Operations Center</dd>
<dd>DVIDS Tags: DIMOC; Vertical; DVIDS Bulk Import; 144th FW</dd></dl>
Senior Master Sgt. Chris Drudge
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