COMBAT OUTPOST OUELLETTE, Helmand province, Islamic Republic of Afghanistan - Lance Cpl. Brandon Chisholm pulls hard on a wrench to remove a track pad. The Abbot, Maine, native is a tank operator with 1st Tank Battalion, 2nd Marine Division (Forward). Chisholm and his team of Marines work tirelessly to maintain their M-1A1 “Abrams” Main Battle Tanks.