Members of the U.S. Capitol Police are undergoing training this week on responding to hazardous chemicals, suspicious packages and threats of explosives.
Baltimore City Police are on the hunt for the culprits behind a series of Molotov cocktails thrown in public areas, and even homes over the last three months.
A search for live explosives is prompting some changes for workers and visitors to Aberdeen Proving Ground near Aberdeen.
Authorities say more explosives have been found along the shoreline of a state park in southern Maryland.
An explosive scare on the UMBC campus in Catonsville. Several homemade bombs were found at a campus dorm.
Aberdeen Proving Ground officials warn that explosives experts will be detonating unexploded ordnance over the next few weeks.