FORWARD OPERATING BASE DELTA, Iraq, Aug. 26, 2009 – While some people join the Army to find adventure for the first time, a deployed soldier here said she joined to add to the adventures she’s already had. Army Sgt. Sierra Harbison, a food service specialist with Echo Company, 1st Battalion, 150th Aviation Regiment, Assault Helicopter Battalion, joined the National Guard to find adventure. She volunteered for her current deployment in Iraq. Courtesy photo (Click photo for screen-resolution image);high-resolution image available. Army Sgt. Sierra Harbison, a food service specialist here with Company E, 1st Battalion, 150th Aviation Regiment, Assault Helicopter Battalion, said...