DC Metro police hold anti-terror drill

(AP) — Police conducted an anti-terrorism drill at one of the Washington subway system's busiest stations, launching a new initiative aimed at deterring terrorist activity.

Metrorail officials conducted the exercise between 7:30 a.m. and 9 a.m. Tuesday at Union Station. About 50 officers participated, including agents from Metro's anti-terrorism unit.

Metro says the show-of-force exercise is meant to remind riders that the agency remains vigilant against terrorism. Metro plans to conduct similar drills in the future with other law enforcement agencies.