Each month, AVweb publishes about a half-dozen columns on a range of aviation topics. If we do things right, these simply appear on the site, for all to read free of charge. What’s less obvious is the behind-the-scenes work and thought that goes into these columns. That’s another way of saying producing a monthly column isn’t easy, nor is it sustainable forever. In that context, effective this month, Don Brown has ended his long-time popular column, Say Again?.