The newly formed MSB will assume the responsibilities of administrative support to the I MEF Command Element to better posture the I MEF Information Group to focus on leading in the information environment. - Marines with I Marine Expeditionary Force Support Battalion march in formation during the MSB activation ceremony on Camp Pendleton, Calif., April 11, 2018. The newly formed MSB will assume the responsibilities of administrative support to the I MEF Command Element to better posture the I MEF Information Group to focus on leading in the information environment. (U.S. Marine Corps photo by Cpl. Jacob A. Farbo)

Marines and Sailors with 1st Battalion, 11th Marine Regiment, 1st Marine Division, march in the 60th Swallows Day Parade on March 24, 2018. - SAN JUAN CAPISTRANO, Calif. (March 24, 2018) – Marines and Sailors with 1st Battalion, 11th Marine Regiment, 1st Marine Division, march in the 60th Swallows Day Parade on March 24, 2018. The parade is one of the nation’s largest non-motorized parades and is held annually as part of paying tribute to the city’s Spanish and western history. During the parade, the Marines marched in formation and carried their unit colors and the American flag. (U.S. Marine Corps photo by Lance Cpl. Ruth Wheeley)

In 2017, I MEF Marines and Sailors supported more than 140 community events. - Marines and sailors with I Marine Expeditionary Force salute the flag during the San Diego County Credit Union Holiday Bowl National Anthem, Dec. 28, 2017. In 2017, I MEF Marines and Sailors supported more than 140 community events. (U.S. Marine Corps photo by Lance Cpl. Cutler Brice)

Col. Bobbi Shea (right) relinquishes the I Marine Expeditionary Force Information Group colors to Col. Dawn R. Alonso (left) during a change of command and re-designation ceremony at Camp Pendleton, Calif., July 6, 2017. During the ceremony I MEF Headquarters Group was re-designated as I MEF Information Group to support I MEF in the expanding information environment. (U.S. Marine Corps photo by Lance Cpl. Robert A Alejandre) - Col. Bobbi Shea (right) relinquishes the I Marine Expeditionary Force Information Group colors to Col. Dawn R. Alonso (left) during a change of command and re-designation ceremony at Camp Pendleton, Calif., July 6, 2017. During the ceremony I MEF Headquarters Group was re-designated as I MEF Information Group to support I MEF in the expanding information environment. (U.S. Marine Corps photo by Lance Cpl. Robert A Alejandre)

MARINE CORPS BASE CAMP PENDLETON, Calif. - Midshipman Michelle Mathews is a 19-year-old Midshipmen striving to be a Marine Corps officer, is one of the many people whose passion for being in the armed services has put her in the path to becoming a future leader. Mathews lives in Houston and attends Villanova University as a political science major. Her ultimate goal is to lead Marines and become a combat engineer officer. (U.S. Marine Corps Photo by Cpl. Demetrius Morgan/RELEASED) - MARINE CORPS BASE CAMP PENDLETON, Calif. - Midshipman Michelle Mathews is a 19-year-old Midshipmen striving to be a Marine Corps officer, is one of the many people whose passion for being in the armed services has put her in the path to becoming a future leader. Mathews lives in Houston and attends Villanova University as a political science major. Her ultimate goal is to lead Marines and become a combat engineer officer. (U.S. Marine Corps Photo by Cpl. Demetrius Morgan/RELEASED)

MARINE CORPS BASE CAMP PENDLETON, Calif. – Maj. Misty Posey the Plans Officer with the Manpower Integration Office, Headquarters Marine Corps, educates an audience about the integration of female Marines into previously closed combat arms occupations and units at the Unit Event Center June 8, 2016. The goal of integration education training is to ensure commanders and staffs are sufficiently educated and prepared to receive Marines of either gender by October 31, 2016 (active) and January 31, 2017 (reserve). “I hope we get to the point where people look at female Marines as Marines first and as women second,” Posey said. (U.S. Marine Corps photo by Lance Cpl. Shellie Hall/ Released) - MARINE CORPS BASE CAMP PENDLETON, Calif. – Maj. Misty Posey the Plans Officer with the Manpower Integration Office, Headquarters Marine Corps, educates an audience about the integration of female Marines into previously closed combat arms occupations and units at the Unit Event Center June 8, 2016. The goal of integration education training is to ensure commanders and staffs are sufficiently educated and prepared to receive Marines of either gender by October 31, 2016 (active) and January 31, 2017 (reserve). “I hope we get to the point where people look at female Marines as Marines first and as women second,” Posey said. (U.S. Marine Corps photo by Lance Cpl. Shellie Hall/ Released)

MARINE CORPS BASE CAMP PENDLETON, Calif. – Master Chief Petty Officer Michael Smith, outgoing command master chief of I Marine Expeditionary force, ‘goes ashore’ for the last time at the conclusion of his change of charge and retirement ceremony on Camp Pendleton June 3, 2016. Stemming from the naval tradition of requesting permission to leave the ship, ‘going ashore’ signifies the honorable retirement of a sailor from naval service. Master Chief Petty Officer Frank Dominguez, a Superior, Arizona native, is replacing Smith, a Ridgecrest native, as the command master chief of I Marine Expeditionary Force. (U.S. Marine Corps Photo By Cpl. Garrett White/Released) - MARINE CORPS BASE CAMP PENDLETON, Calif. – Master Chief Petty Officer Michael Smith, outgoing command master chief of I Marine Expeditionary force, ‘goes ashore’ for the last time at the conclusion of his change of charge and retirement ceremony on Camp Pendleton June 3, 2016. Stemming from the naval tradition of requesting permission to leave the ship, ‘going ashore’ signifies the honorable retirement of a sailor from naval service. Master Chief Petty Officer Frank Dominguez, a Superior, Arizona native, is replacing Smith, a Ridgecrest native, as the command master chief of I Marine Expeditionary Force. (U.S. Marine Corps Photo By Cpl. Garrett White/Released)

MARINE CORPS BASE CAMP PENDLETON, Calif. – Marines with 1st Combat Engineer Battalion, 1st Marine Division, present veterans with a current small-arms weaponry display during the unit’s 75th anniversary at Camp Pendleton May 26, 2016. During the event, veterans who served with 1st CEB gathered at the current headquarters building and toured the area, while speaking with current service members. (U.S. Marine Corps photo by Cpl. Demetrius Morgan/RELEASED) - MARINE CORPS BASE CAMP PENDLETON, Calif. – Marines with 1st Combat Engineer Battalion, 1st Marine Division, present veterans with a current small-arms weaponry display during the unit’s 75th anniversary at Camp Pendleton May 26, 2016. During the event, veterans who served with 1st CEB gathered at the current headquarters building and toured the area, while speaking with current service members. (U.S. Marine Corps photo by Cpl. Demetrius Morgan/RELEASED)