 Quick look at the top stories we're working on at WTOP. A boil water advisory is in effect this morning for all of D.C. and most of Arlington County. Anyone in those areas is told to throw out any beverages and ice made after 9 last night. Road closings already in effect this morning ahead of the July 4th festivities on the National Mall. Metrorail service starts at 7 a.m. Keep it here for full details in the minutes ahead. It's now 718.