A power outage inconvenienced residents in Washington, D.C., and southern Maryland Tuesday.According to The Washington Post, much of the area briefly lost power due to a piece of metal coming apart at a power plant. This outage affected public and private buildings alike, including The White House, the Department of Energy, and the Department of State. Advertisement-content continues below As The Post reports, “a dozen people were trapped in stalled elevators passengers were left searching for exits in darkened underground Metro stations, and a building full of Department Energy employees and the main campus of the University of Maryland closed...