Responsibility for investigating an incident rests upon the area claims office (ACO) or claims processing office (CPO) responsible for the geographic area in which the incident occurred. The Commander USARCS, an ACO, and a CPO are authorized to designate the legal office of the installation at which the member of the foreign force or civilian component is attached, including the legal office of another armed force, to carry out the responsibility to investigate. The investigation will comply with the responsible Service's implementing claims regulation. When the member is neither assigned nor attached within the United States, the Commander USARCS will furnish assistance.