Haiti earthquake, Marines with the 22nd MEU embarked on the Bataan Amphibious ready group for Haiti in order to conduct a humanitarian assistance and disaster relief mission known as Operation Unified Response. 22nd MEU departed Camp Lejuene on 15 January and began arriving on 18 January. The 22nd MEU was the first major Marine force to respond, managing the hardest hit area that spanned west of Port-au-Prince. Initially, the MEU conducted immediate relief operations by distributing food, water and providing medical care. Units within the MEU consist of 1,600 Marines with the Combat Logistics Battalion 22, 3rd Battalion 2nd Marines, Marine Heavy Helicopter Squadron 461 and the MEU Command Element, while the ARG consisted of , and . 150 Marines aboard joined the MEU, originally from the African Partnership Station Security Cooperation MAGTF, along with the 24th MEU on , , and . On 24 March, the MEU and ARG were released from their mission and sailed for home. From February to March, the MEU transitioned to sustained relief operations and focused on turning over responsibilities to the Government of Haiti and major relief organizations ashore before departing at the end of March. While supporting relief operations, the Marines and Sailors of the 22nd MEU combined a network of sea-based logistics and land-based support with as many as 1,100 Marines and Sailors ashore to conduct immediate aid efforts. The Marines focused on a 60-kilometer area west of Port-au-Prince, from Carrefour to Leogane, through Grand Goave to Petit Goave. In order to move and distribute supplies in these areas, Marines and Sailors partnered with the United Nations, United States Agency for International Development, non-governmental organizations, and Canadian and Spanish military forces. Marines from the 22nd MEU assisted the World Food Program with the delivery of more than 3.2 million pounds of bulk foods, such as rice, for earthquake survivors at distribution points in and around Carrefour. According to the WFP, each bag of rice delivered can feed a family of five for two weeks – more than 55,000 families. During their relief assistance to Haiti, the Marines and Sailors conducted and assisted more than 1500 humanitarian relief missions. The 22nd MEU independently delivered nearly 560,000 liters of bottled water and nearly 195,000 gallons of bulk water; more than 1.6 million pounds of rations and approximately 15,000 pounds of medical supplies, while rotary wing aircraft from the 22nd MEU flew more than