WASHINGTON, Aug. 12 -- The U.S. Department of Defense's Defense Logistics Agency issued the following news: * * * Commentary: DLA's F-16 support began before fielding, continues today * Those who know the Defense Logistics Agency won't be surprised to learn it provides parts for the F-16 Fighting Falcon. What may be surprising is that DLA has been supporting the lightweight fighter for half a century. Before the F-16 became operational Oct. 1, 1980, the U.S. Air Force launched initial prod  more