If you go to symphony concerts often enough, you get to know the players musically, and even though you probably don't ever talk to them, you wind up feeling like you have a personal relationship with them. even though you don't. You watch their comings and goings and talk about who played the flute solos in which pieces, and who was in the concertmaster's chair today. The players become part of your musical neighborhood, and changes in the neighborhood can be unsettling.
I emailed SFS, and today got the reply: Jack van Geem is retiring, and so is trumpeter Glenn Fischthal.
Hail and farewell; thank you so much, Mr. van Geem and Mr. Fischthal, for your contributions to this great orchestra. Enjoy your post-SFS life, and know that you'll be missed, and remembered with great pleasure.