Dr. Carl B. Mack, National Society of Black Engineers Executive Director, and Maj. Gen Melvin G. Spiese, Deputy Commanding General, I Marine Expeditionary Force; and Commanding General, 1st Marine Expeditionary Brigade, briefly discuss the relationship between the Marine Corps and NSBE during the convention career fair at the David L. Lawrence Convention Center in Pittsburgh, March 30. - Dr. Carl B. Mack, National Society of Black Engineers Executive Director, and Maj. Gen Melvin G. Spiese, Deputy Commanding General, I Marine Expeditionary Force; and Commanding General, 1st Marine Expeditionary Brigade, briefly discuss the relationship between the Marine Corps and NSBE during the convention career fair at the David L. Lawrence Convention Center in Pittsburgh, March 30.