Global Security Newswire

An alarm yesterday morning in a chemical storage structure at the Aberdeen Proving Ground in Maryland indicated the presence of mustard vapor inside the building, the U.S. Army said (see GSN, June 8).

Ongoing monitoring outside the structure has not indicated the release of any chemical agent, the Army said in a written statement. The Army’s Technical Escort Unit is working to determine what caused the leak and how much agent was released within the building, officials said (U.S. Army press release, June 23).

This is the first container leak in the proving ground’s history, according to spokesman George Mercer (Patrick Tyler, Baltimore Sun, June 24).