CAMP AL QA?IM, Iraq ? Lance Cpl. Michael Walk, a fire-directional controller (FDC) and Sierra Vista, Ariz., native, with Mobile Assault Platoon 3, Weapons Company, Task Force 1st Battalion, 4th Marine Regiment, Regimental Combat Team 2, views an M16 plotting board with another Marine from MAP3. The FDC plots grid coordinates given from a forward scout-observer and then tells the mortarmen where to fire their mortars. - CAMP AL QA?IM, Iraq ? Lance Cpl. Michael Walk, a fire-directional controller (FDC) and Sierra Vista, Ariz., native, with Mobile Assault Platoon 3, Weapons Company, Task Force 1st Battalion, 4th Marine Regiment, Regimental Combat Team 2, views an M16 plotting board with another Marine from MAP3. The FDC plots grid coordinates given from a forward scout-observer and then tells the mortarmen where to fire their mortars.