Sgt. 1st Class Daryl Yost, platoon sergeant, Company A, 1st Battalion, 4th Aviation Regiment, Combat Aviation Brigade, 4th Infantry Division, Multi-National Division - Baghdad from Cumberland, Md., shows Carlos Cavazo, guitarist for the classic rock 'n' roll band Big Noize an AH-64D Apache helicopter on Camp Taji, Sept. 11, 2008. The band, comprised of members from Deep Purple, Ozzy Osbourne, AC/DC and Quiet Riot, visited the CAB and were at the camp north of Baghdad to entertain the troops with their musical selection of rock classics from the 70's and 80's.