While it may be humorous to your reporter, to the Fulton County District Attorney's office, drugs --- and the lives they destroy --- are no laughing matter ("A really cold case: Fulton tries to prosecute dead man," Page One, June 7). That is why the Atlanta mayor, chief of police, the U.S. attorney, the head of the Bureau of Alcohol, Tobacco and Firearms and Explosives, I and others convened a summit recently to launch a major, coordinated assault on illegal drugs in our community. [continues 155 words]