Just before dusk, the Military Sealift Command (MSC) surveillance ship USNS SALWART (T-AGOS-1) passes through the open draw of the Woodrow Wilson Bridge en route back to her homrport at Little Creek, Va. The SALWART has been converted for use in the drug-interdiction program by installation of an SPS-49 long range search radar on the main mast and upgraded satellite receivers