Marines with Golf Battery, 2nd Battalion, 10th Marine Regiment, prepare to load and fire the M-327 120mm towed rifled mortar expeditionary fire support system during training with Marines from Delta Company, 2nd Assault Amphibian Battalion, 2nd Marine Division, aboard Fort Bragg, N.C., May 8, 2014. The training was a part of the field operation Rolling Thunder, a semiannual event in which Marines learned to be more proficient at effectively employing their respective weapons systems.