U.S. soldiers and Marines clean up debris at Sendai Airport, Sendai, Japan, March 27, 2011, during Operation Tomodachi earthquake and tsunami humanitarian relief efforts. More than 1,000 III Marine Expeditionary Force and Marine Corps Bases Japan Marines and sailors deployed to mainland Japan supporting Government of Japan-led humanitarian assistance/disaster relief efforts following the 9.0 magnitude earthquake and subsequent tsunami that struck northern Japan March 11. (U.S. Air Force photo by Staff Sgt. Ali E. Flisek)

Cpl. Anthony Blumenthal, 11th Marine Expeditionary Unit, lets tear gas into his XM50 joint-service general-purpose mask, part of chemical-biological-radiological-nuclear defense training here March 10. Blumenthal, 21, from Chicago, and approximately 100 unit members, drilled with the masks in a tear-gas filled chamber. (Marine Corps photo by Gunnery Sgt. Scott Dunn)

Lance Cpl. Steven Reese, 21, combat engineer, Engineer Company, Combat Logistics Battalion 3, 2nd Marine Logistics Group (Forward), guides a heavy equipment vehicle during a bridge construction project in Haji Hanif Khan, Afghanistan, March 8. The combat engineers and heavy equipment operators of CLB-3's Engineer Company have conducted several civil development and military construction projects throughout Afghanistan since they arrived in October 2010. (U.S. Marine Corps photo by Cpl. Danny Woodall)

The 35th Commandant of the Marine Corps, Gen. James Amos, testifies at the Senate Armed Services Committee Posture Hearing in Washington, D.C., March 8. The posture meeting was held to review the fiscal year 2012 annual budget and overseas contingency operations request. (U.S. Marine Corps photo by Sgt. Ben Flores)

A CH-46E Sea Knight helicopter with Marine Medium Helicopter Squadron 265, 1st Marine Aircraft Wing, III Marine Expeditionary Force (Forward), lands at an improvised landing zone in Sendai March 14 as part of Operation Tomodachi. Personnel with III MEF (Fwd.) established a humanitarian assistance center here to assist the Government of Japan-led relief efforts following the devastating earthquake and tsunami that struck mainland Japan March 11. (Marine Corps photo by Gunnery Sgt. Leo A. Salinas)