Pfc. Christopher B. Alvey, radio operator, 13th Marine Expeditionary Unit, ensures the Combat SkySat balloon stays air-tight during the inflation process, July 14. The Combat SkySat allows radio coverage over a 600-mile radius at an altitude of 100,000 feet.
<dl><dd>Unit: I Marine Expeditionary Force</dd>
<dd>DVIDS Tags: communications; balloon; Marines</dd></dl>
Sgt. Marcy Sanchez
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