They'll be in my prayers too.
These tragic incidents are happening too often. Regardless of how the riders were injured today, I'd like to see tracks putting more effort into safety. Limit the # of bikes on the track, stagger practice sessions by ability, more flaggers, etc....... Our sport needs a greater focus on safety at tracks.
I've ridden at Hungry Valley 3 times in the past two years. Each time I felt the safety issues were not taken seriously enough. The place is a zoo on weekends. After my last visit (9 months ago), I decided never to ride their again.