Tucson, Arizona on June 11 and 12, 2021Slide decks:Parts 1 & 2https://docs.google.com/presentation/d/1nTJIAHXPgn79zxBxJeAQqAHQMnx2T5u6y9vidh-4IG0Part 3https://docs.google.com/presentation/d/1Yl4sCXNqbz1NpVRgVaOihrx6LRBRLQw0Hl14P90iz5g