U.S. Marines and Department of Defense Civilians, attend the Defense Agencies Initiative training course on Marine Corps Base Quantico, Va., Sept. 22, 2021. The DAI training course aims to simplify financial management across the DOD, to deliver more auditable records and improve integration through standard data structures and business practices. - U.S. Marines and Department of Defense Civilians, attend the Defense Agencies Initiative training course on Marine Corps Base Quantico, Va., Sept. 22, 2021. The DAI training course aims to simplify financial management across the DOD, to deliver more auditable records and improve integration through standard data structures and business practices.