A stupid vandal or a scary criminal? Shots were fired at the National Museum of the Marine Corps on Thursday night—the fourth time in recent weeks that shots have been fired at a building in the area. The museum was shot at on October 17; then, two days later, shots were fired at the Pentagon. On Monday or Tuesday of this week, shots were fired at a Marine Corps recruiting station in Virginia. Cops say the same gun was used in the first three cases.