Lights Burn Late In Navy's Busy Gun Factory -- An unusual night picture of the Navy yard at Washington D.C., its lights reflected in the Anacosta River near its junction with the Potomac, where approximately 8,000 men are employed now in day and night shifts making guns for the new cruisers and destroyers financed from public works funds. Repairing of the heavy guns of older ships and the manufacture of other Naval equipment goes on as usual. Not since 191 has the yard been the scene of so much