Back to UAB for another doctoral dissertation oral defense. Last time I came up here was on March 13, right at the beginning of the lockdown. The campus is still completely empty. In March, at the end of the defense the candidate, who had just come back from China, offered a few masks to each member of the committee as a sign of gratitude instead of the proverbial cheese and wine. Almost four months later, each member comes equipped with his own mask. Still no cheese and wine.