I had the great pleasure of teaching Austin Multivariable Calculus during his senior year at the Academy. I had just revamped the course and picked a new textbook, and it was a bit of a rough year for most of the students in the course. But Austin nailed it. He clearly loved learning the math, and boy did he do that well. I can remember the charmingly puzzled look he would always get when he asked a question about something really difficult, and the intensity with which he would dive back into his work after having figured it out. I also remember his unfailing graciousness and kindness. He seemed incapable of negativity. I was glad that I saw him a few times since he graduated--it was great to hear about how he was doing. It saddens me greatly that he will not be able to fulfill his exceptional promise. My heart goes out to all of his family and friends.