Shun Zhang successfully defended his doctoral thesis "Three-dimensional Integral Boundary Layer Method for Viscous Aerodynamic Analysis" back on July 5, 2022!  In a triumph of virtual interactions, Shun and his committee were spread across the country for his defense, and you can see us all in the screenshot taken after the defense:  Shun was in California, I was in Montana, Dr. Steve Allmaras was in Washington state, Prof. Qiqi Wang was in Chicago (at an airport between flights!), Prof. Chris Fidkowski was in Michigan, Dr. David Rodriguez was in California, and Prof. Mark Drela was the one person actually in Cambridge, MA.  So we covered all the continental US time zones!