DAHLGREN, Va. – The Naval Surface Warfare Center Dahlgren Division (NSWCDD) will conduct range testing April 3-4, that may produce very loud noise in communities surrounding Naval Support Facility Dahlgren. The testing hours will run from 8 a.m. to 5 p.m.

Access to the Potomac River Middle Danger Zone – as described in 33 CFR 334.230 – will be restricted during testing.