Chief Warrant Officer 4 Matthew Carpenter, the infantry weapons officer with Regimental Combat Team 7, has deployed 12 times including five to Iraq and two to Afghanistan. The Perry County, Penn., native has been promoted nine times in his 24 years in the Marine Corps and has received three medals with a combat valor distinguishing device. - Chief Warrant Officer 4 Matthew Carpenter, the infantry weapons officer with Regimental Combat Team 7, has deployed 12 times including five to Iraq and two to Afghanistan. The Perry County, Penn., native has been promoted nine times in his 24 years in the Marine Corps and has received three medals with a combat valor distinguishing device.