My dad, Bill Parady, worked with Phil on the F106 project at NASA and enjoyed seeing him regularly at the "old-timers" gatherings. Phil and Lee Persons are a large part of the very fond memories my dad has of working at NASA all those years. In March, in the midst of his battle, Phil took the time to attend my dad's 80th birthday celebration. I cannot express what that meant to us, but particularly to my dad. Phil made him feel very special that day just with his presence. I'm sure that is but a small example of Phil's impact on the people who had the good fortune to know him. We send our deepest condolences to your family.