WASHINGTON, Aug. 15 -- The U.S. Department of Justice Bureau of Alcohol, Tobacco, Firearms and Explosives issued the following news release: * * * ATF provides blast investigation training to Mexican authorities HUNTSVILLE, Ala. - The National Center for Explosives Training and Research, located on Redstone Arsenal, recently hosted 21 members of the Mexican Federal Police, Federal Attorney General's Office, State Police, and Mexican Military Personnel for an intensive Post Blast Investigative Techniques course. This international training in more PR