This isn't going to be a cute column. It may be a bit long. Some things need saying, so I'm going to say them. Recently stories have appeared in the press implying that Steve Hatfill, among other things a former ebola researcher at the Army's biological-warfare research center at Fort Detrick, Md, sent the notorious anthrax-bearing letters to people around the country. The implication is that he is a murderer. I know Hatfill socially, though we are not intimate. We met years back in Washington at a party held by a common friend. We have the occasional beer, bump into...