COMBAT OUTPOST OUELLETTE, Helmand province, Islamic Republic of Afghanistan - The rough terrain of Afghanistan takes a toll on tank pads (top) and must be replaced (bottom). The Company D tankers with 1st Tank Battalion, 2nd Marine Division (Forward), work tirelessly to maintain their M-1A1 “Abrams” Main Battle Tanks. Each tank has more than 300 track pads that require replacement about every three months.