Lance Cpl. Roy Castro, an aircraft mechanic with Marine Light Attack Helicopter Squadron 169, 3rd Marine Aircraft Wing (Forward), receives his Certificate of Naturalization from Mr. Robert V. Looney, a citizenship and immigration services officer, Department of Homeland Security - U.S. Citizenship and Immigration Services, during a naturalization ceremony for U.S. citizenship aboard Kandahar Airfield, Afghanistan, Jan. 29. Castro was born in the Philippine Islands, moved to Guam with his family in 2000 and set foot in the continental U.S. for the first time to attend Marine Corps recruit training in 2009. - Lance Cpl. Roy Castro, an aircraft mechanic with Marine Light Attack Helicopter Squadron 169, 3rd Marine Aircraft Wing (Forward), receives his Certificate of Naturalization from Mr. Robert V. Looney, a citizenship and immigration services officer, Department of Homeland Security - U.S. Citizenship and Immigration Services, during a naturalization ceremony for U.S. citizenship aboard Kandahar Airfield, Afghanistan, Jan. 29. Castro was born in the Philippine Islands, moved to Guam with his family in 2000 and set foot in the continental U.S. for the first time to attend Marine Corps recruit training in 2009.