Lots of discussion about the three-tier (imagine that) at NBWA last week, including debates on whether it really is under attack and how to fight back. A panel including Mike Mazzoni, senior partner of Seema International; Benj Steinman, president of Beer Marketers Insights; Trevor Stirling, European beverages analyst for Sanford C. Bernstein Limited; and John Williams, executive director of the Beer Industry League of Louisiana took the contentious issue head on.