On September 29, 2009, FEMA awarded a Transit Security Grant of $48,286,592 (number 2009-RA-RI-0105) to the Port Authority of New York and New Jersey (Port). The purpose of the grant is to fund exterior and interior mitigation measures to strengthen the PATH rail tunnels connecting cities in northern New Jersey to Manhattan. Reimbursement for eligible project costs is based on the grant agreement; Office of Management and Budget (OMB) Circular A-87, Cost Principles for State,Local and Indian Tribal Governments, Revised; and FEMA guidance. As of March 31, 2012, the Port had claimed project costs totaling $42,020,112. The costs covered the period from September 1, 2009, through March 31, 2012.