High Quality Content by WIKIPEDIA articles! The Office of Economic Adjustment (OEA) is the U.S. Department of Defense`s (DoD) primary source for assisting communities that are adversely impacted by Defense program changes, including base closures or realignments, base expansions, and contract or program cancellations. To assist affected communities, OEA manages and directs the Defense Economic Adjustment Program, and coordinates the involvement of other Federal Agencies.