Maj. Gen. Daniel J. O’Donohue and Sgt. Maj. William T. Sowers stand for a quick photo opportunity following a ceremony with the San Diego Nice Guys charity group, Dec. 16, 2015. During the ceremony, the San Diego Nice Guys presented their annual contribution from the Marine Family Christmas Fund to assist local military families in their holiday grocery shopping. Since 1997, the MFCF has supported thousands of families, primarily those who have forward deployed Marines and sailors of the Blue Diamond division, with generous donations for the holiday season. - Maj. Gen. Daniel J. O’Donohue and Sgt. Maj. William T. Sowers stand for a quick photo opportunity following a ceremony with the San Diego Nice Guys charity group, Dec. 16, 2015. During the ceremony, the San Diego Nice Guys presented their annual contribution from the Marine Family Christmas Fund to assist local military families in their holiday grocery shopping. Since 1997, the MFCF has supported thousands of families, primarily those who have forward deployed Marines and sailors of the Blue Diamond division, with generous donations for the holiday season.

Marines rush a simulated combat town during the mechanized assault portion of a Marine Corps Combat Readiness Exercise at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Dec. 9, 2015. The purpose of a MCCRE is to evaluate Marines’ collective performance in specific mission requirements that will prepare them for their upcoming deployment rotation. The Marines are with 2nd Battalion, 7th Marine Regiment, 1st Marine Division. (U.S. Marine Corps photo by Lance Cpl. Devan K. Gowans) - Marines rush a simulated combat town during the mechanized assault portion of a Marine Corps Combat Readiness Exercise at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Dec. 9, 2015. The purpose of a MCCRE is to evaluate Marines’ collective performance in specific mission requirements that will prepare them for their upcoming deployment rotation. The Marines are with 2nd Battalion, 7th Marine Regiment, 1st Marine Division. (U.S. Marine Corps photo by Lance Cpl. Devan K. Gowans)

Marines run through the obstruction of smoke during the company supported, live-fire assault portion of a Marine Corps Combat Readiness Evaluation at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Dec. 6, 2015. The purpose of a MCCRE is to evaluate Marines’ collective performance in specific mission requirements that will prepare them for their upcoming deployment rotation. The Marines are with 2nd Battalion, 7th Marine Regiment, 1st Marine Division. (U.S. Marine Corps photo by Lance Cpl. Devan K. Gowans) - Marines run through the obstruction of smoke during the company supported, live-fire assault portion of a Marine Corps Combat Readiness Evaluation at Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Dec. 6, 2015. The purpose of a MCCRE is to evaluate Marines’ collective performance in specific mission requirements that will prepare them for their upcoming deployment rotation. The Marines are with 2nd Battalion, 7th Marine Regiment, 1st Marine Division. (U.S. Marine Corps photo by Lance Cpl. Devan K. Gowans)

Lance Cpl. Roderick Jacquote, a combat photographer with Headquarters Company, Headquarters Battalion, 1st Marine Division, edits photos during a chemical, biological, radiological, nuclear drill aboard Marine Corps Air Ground Combat Center Twentynine Palms, California, Dec. 13, 2015. The Marines and Sailors with 5th Marine Regiment conducted the gas drill as part of Steel Knight 2016, a division-led exercise which prepares Marines and Sailors with the 1st Marine Division and adjacent I Marine Expeditionary Force units with the skill sets necessary to operate as a fully capable Marine Air Ground Task Force. - Lance Cpl. Roderick Jacquote, a combat photographer with Headquarters Company, Headquarters Battalion, 1st Marine Division, edits photos during a chemical, biological, radiological, nuclear drill aboard Marine Corps Air Ground Combat Center Twentynine Palms, California, Dec. 13, 2015. The Marines and Sailors with 5th Marine Regiment conducted the gas drill as part of Steel Knight 2016, a division-led exercise which prepares Marines and Sailors with the 1st Marine Division and adjacent I Marine Expeditionary Force units with the skill sets necessary to operate as a fully capable Marine Air Ground Task Force.

Lance Cpl. David Wadleigh, a military working dog handler and Nicky, a military working dog with 1st Law Enforcement Battalion, I Marine Expeditionary Force, provide security during a simulated mass casualty drill during Steel Knight aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Dec. 12, 2015. Steel Knight prepares Marines and sailors with the 1st Marine Division and adjacent I Marine Expeditionary Force units with the skill sets necessary to operate as a fully capable Marine Air Ground Task Force. (U.S. Marine Corps photo by Cpl. Will Perkins/RELEASED) - Lance Cpl. David Wadleigh, a military working dog handler and Nicky, a military working dog with 1st Law Enforcement Battalion, I Marine Expeditionary Force, provide security during a simulated mass casualty drill during Steel Knight aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Dec. 12, 2015. Steel Knight prepares Marines and sailors with the 1st Marine Division and adjacent I Marine Expeditionary Force units with the skill sets necessary to operate as a fully capable Marine Air Ground Task Force. (U.S. Marine Corps photo by Cpl. Will Perkins/RELEASED)

Lance Cpl. Travis DeShazo, a rifleman assigned to Company E, 2nd Battalion, 4th Marine Regiment, 1st Marine Division, prepares a computer to control a Raven unmanned aerial system to establish the location of notional enemy units aboard Marine Corps Air Ground Combat Center, California, Dec. 10, 2015. The Marines employed the Raven UAS as part of Steel Knight to gain a better understanding of it and develop a higher proficiency of what it takes to operate as a more effective as the ground combat element of the I Marine Expeditionary Force. - Lance Cpl. Travis DeShazo, a rifleman assigned to Company E, 2nd Battalion, 4th Marine Regiment, 1st Marine Division, prepares a computer to control a Raven unmanned aerial system to establish the location of notional enemy units aboard Marine Corps Air Ground Combat Center, California, Dec. 10, 2015. The Marines employed the Raven UAS as part of Steel Knight to gain a better understanding of it and develop a higher proficiency of what it takes to operate as a more effective as the ground combat element of the I Marine Expeditionary Force.

Marines with Company A, 1st Reconnaissance Battalion, 1st Marine Division, survey a named area of interest during reconnaissance and surveillance training, Nov. 19-21, 2015, aboard Marine Corps Training Area Bellows, Hawaii. The Marines conducted insertion, infiltration, execution, exfiltration, and extraction in terrain unfamiliar to what is usually found at their home base in California. The Hawaiian terrain ranged from beach shores, to dense jungle and open valleys during pouring rains (U.S. Marine Corps photo by Sgt. Tony Simmons) - Marines with Company A, 1st Reconnaissance Battalion, 1st Marine Division, survey a named area of interest during reconnaissance and surveillance training, Nov. 19-21, 2015, aboard Marine Corps Training Area Bellows, Hawaii. The Marines conducted insertion, infiltration, execution, exfiltration, and extraction in terrain unfamiliar to what is usually found at their home base in California. The Hawaiian terrain ranged from beach shores, to dense jungle and open valleys during pouring rains (U.S. Marine Corps photo by Sgt. Tony Simmons)

A Marine holds security during a route clearance drill as a part of Exercise Steel Knight at Marine Corps Air Ground Combat Center Twentynine Palms, California, Dec. 13, 2015. The Marine is with 1st Combat Engineer Battalion. During route clearance Marines use a variety of vehicles to search for improvised explosive devices, mines and other dangerous obstructions. Steel Knight is a 1st Marine Division led exercise, which enables the Marines and sailors to operate in a realistic environment to develop skill sets necessary to maintain a fully capable Marine Air Ground Task Force. - A Marine holds security during a route clearance drill as a part of Exercise Steel Knight at Marine Corps Air Ground Combat Center Twentynine Palms, California, Dec. 13, 2015. The Marine is with 1st Combat Engineer Battalion. During route clearance Marines use a variety of vehicles to search for improvised explosive devices, mines and other dangerous obstructions. Steel Knight is a 1st Marine Division led exercise, which enables the Marines and sailors to operate in a realistic environment to develop skill sets necessary to maintain a fully capable Marine Air Ground Task Force.

Marines with Battery I, 3rd Battalion, 11th Marine Regiment, 1st Marine Division, fire an M777 Howitzer¬ during the opening day of live-fire operations for Steel Knight at Marine Corps Air Ground Combat Center Twentynine Palms, California, on Dec. 10, 2015. The tough, realistic training is intended to develop combat skills necessary to operate as the ground combat element of the I Marine Expeditionary Force. - Marines with Battery I, 3rd Battalion, 11th Marine Regiment, 1st Marine Division, fire an M777 Howitzer¬ during the opening day of live-fire operations for Steel Knight at Marine Corps Air Ground Combat Center Twentynine Palms, California, on Dec. 10, 2015. The tough, realistic training is intended to develop combat skills necessary to operate as the ground combat element of the I Marine Expeditionary Force.

1st Battalion, 1st Marine Regiment infantrymen tactically move from building to building in a simulated combat zone during Exercise Steel Knight 2016 at Marine Corps Base Camp Pendleton, Calif., Dec. 4, 2015. 1st Marine Division has conducted Steel Knight for the past three years, making this the fourth iteration of the exercise. Steel Knight will test I Marine Expeditionary Force’s amphibious capabilities through realistic, scenario-driven training. - 1st Battalion, 1st Marine Regiment infantrymen tactically move from building to building in a simulated combat zone during Exercise Steel Knight 2016 at Marine Corps Base Camp Pendleton, Calif., Dec. 4, 2015. 1st Marine Division has conducted Steel Knight for the past three years, making this the fourth iteration of the exercise. Steel Knight will test I Marine Expeditionary Force’s amphibious capabilities through realistic, scenario-driven training.