Sailors from commands throughout Joint Base Charleston participate in the Navy-wide, third class petty officer exam March 21, 2013, at Space and Naval Warfare Systems Atlantic on JB Charleston – Weapons Station. More than 2,000 JB Charleston Sailors tested for promotion to E-4, E-5 and E-6 during the March 2013 exams. (U.S. Navy photo/ Petty Officer 1st Class Chad Hallford)