Welcome to the tenth issue of the 2021 edition of Unprecedented. The big news from the past two weeks was the Center for Disease Control’s announcement of new guidance allowing fully vaccinated individuals to go unmasked in nearly all circumstances. The announcement was unexpected and sent governments and businesses scrambling to respond. Some governments, like my home state of Pennsylvania, reacted the same day to conforming their own requirements to the new CDC guidance. Others are taking a wait-and-see approach. Complicating matters is that individual counties and cities have adopted their own face covering requirements. And though some businesses have announced that they will change their face covering policies to match the CDC guidance, others are likely to keep them in place for the foreseeable future, or at least until vaccination rates increase a bit further. All of this means that we are not out of the woods yet, but we seem to be getting close.