Marines with Delta Company, 2nd Tank Battalion, fires their new multi-purpose high explosive round during a range here, Oct. 10, 2013. The Marines of the battalion have been in Afghanistan since July supporting the infantry. - Marines with Delta Company, 2nd Tank Battalion, fires their new multi-purpose high explosive round during a range here, Oct. 10, 2013. The Marines of the battalion have been in Afghanistan since July supporting the infantry.