Cpl. Jeremy M. Wright, 24, a chemical, biological, radiological, nuclear defense specialist with 3rd Battalion, 4th Marine Regiment, Regimental Combat Team 5, attempts to get a sample from a rocket propelled grenade round to test for chemicals near Hit, Iraq, July 10. Wright has been helping the battalion by checking suspected chemicals in their area of operations and working as a watch noncommissioned officer in the battalionâ??s Combat Operations Center.::r::::n:: - Cpl. Jeremy M. Wright, 24, a chemical, biological, radiological, nuclear defense specialist with 3rd Battalion, 4th Marine Regiment, Regimental Combat Team 5, attempts to get a sample from a rocket propelled grenade round to test for chemicals near Hit, Iraq, July 10. Wright has been helping the battalion by checking suspected chemicals in their area of operations and working as a watch noncommissioned officer in the battalionâ??s Combat Operations Center.::r::::n::