Photos from top left to bottom right:
Sergeant Maj. Bryan Zickefoose, the command sergeant major for II Marine Expeditionary Force, speaks with his Marines after completing a 7.5-mile conditioning hike aboard Marine Corps Base Camp Lejeune, N.C., Jan. 23, 2015. Maj. Gen. William D. Beydler is conducting hikes regularly to increase force morale and maintain readiness. (U.S. Marine Corps Photo by Cpl. Chelsea D. Toombs/Released)
U.S. Marines with Combat Logistics Battalion 26, 2nd Marine Logistics Group, begin their next movement after their cold weather survival classes at the U.S. Marine Corps Mountain Warfare Training Center (MWTC) Bridgeport, Calif., Jan. 26, 2015. MWTC trains Marines across the warfighting functions for operations in mountainous, high altitude, and cold weather environments in order to enhance a unit's ability to shoot, move, communicate, sustain, and survive in mountainous regions of the world. (U.S. Marine Corps photo by Sgt. Anthony L. Ortiz/Released)
Corporal Evan Lafoose, left, a chemical, biological, radioactive, and nuclear defense specialist with the 24th Marine Expeditionary Unit, assists Cpl. Zachary R. Herrera, also a CBRN defense specialist, seal his self-contained breathing apparatus mask during a hazardous materials equipment class aboard the amphibious assault ship USS Iwo Jima (LHD 7), Jan. 15, 2015. The 24th MEU is embarked on the ships of the Iwo Jima Amphibious Ready Group and deployed to maintain regional security in the U.S. 5th Fleet area of operations. (U.S. Marine Corps photo by Lance Cpl. Austin A. Lewis/Released)
Retired U.S. Army Maj. Drew D. Dix, center left, and retired U.S. Marine Corps Col. Harvey Barnum, center right, Medal of Honor recipients, pose for a photograph with Marines and Sailors after a luncheon and group discussion at the Paradise Point Officer’s Club, Camp Lejeune, N.C., Jan. 20, 2015. Barnum and Dix met with Service members to relate their experiences and to discuss the present-day Marine Corps. (U.S. Marine Corps photo by Lance Cpl. Jacqueline Smith, MCI-East Combat Camera/Released)
A CH-53E Super Stallion heavy-lift helicopter sits staged on the flight line at Marine Corps Air Station Cherry Point, N.C., Jan. 5, 2015. Cherry Point is home to 2nd Marine Aircraft Wing and several of its squadrons. Its runways operate 24/7, 365 days each year, and the air station hosts squadrons that specialize in heavy helicopter lift and transport; air-to-ground attack support; electronic warfare; aerial transport and refueling; and sea and land search and rescue.
Mortarmen with Weapons Company, Battalion Landing Team 3rd Battalion, 6th Marine Regiment, 24th Marine Expeditionary Unit, fire their M4 carbines during a live-fire exercise aboard the amphibious dock landing ship USS Fort McHenry (LSD 43), Jan. 24, 2015. The 24th MEU is embarked on the ships of the Iwo Jima Amphibious Ready Group and deployed to maintain regional security in the U.S. 5th Fleet area of operations. (U.S. Marine Corps photo by Sgt. Devin Nichols)
U.S. Marines with Combat Logistics Battalion 26, 2nd Marine Logistics Group, prepare to hike up to their training area at the U.S. Marine Corps Mountain Warfare Training Center (MWTC) Bridgeport, Calif., Jan. 19, 2015. MWTC trains Marines across the warfighting functions for operations in mountainous, high altitude, and cold weather environments in order to enhance a unit's ability to shoot, move, communicate, sustain, and survive in mountainous regions of the world. (U.S. Marine Corps photo by Sgt. Anthony L. Ortiz/Released)
Marines and Sailors with the 24th Marine Expeditionary Unit and Iwo Jima Amphibious Ready Group, participate in a "steel beach" picnic aboard the amphibious transport dock ship USS New York, Jan. 18, 2015. The 24th MEU is embarked on the ships of the Iwo Jima Amphibious Ready Group and deployed to maintain regional security in the U.S. 5th Fleet area of operations. (U.S. Marine Corps photo by Cpl. Todd F. Michalek/Released)