Col. Andrew R. MacMannis, left, listens to Sgt. Maj.

Col. Andrew R. MacMannis, left, listens to Sgt. Maj. Gonzalo Vasquez, right, during Amphibious Landing Exercise 2011. MacMannis was responsible for the employment of more than 2,200 Marines and sailors while coordinating with the Navy’s Amphibious Squadron 11, host nation militaries and the U.S. Embassy or consulate officials to support five back-to-back deployments aboard naval ships. MacMannis was the commanding officer of the 31st MEU until June 1, and Vasquez is the sergeant major of the 31st MEU.