Convair F-106 Delta Dart Supersonic Rotational B-seat Simulator Arrives at the 329 FIS George AFB, CA. This B-Seat was the 2nd seat in the trio of ejection seats developed for the F-106. The Zero-Zero Weber seat was the 3rd and final seat, the reliable workhorse. Read more about all the ejection seats on the F-106 website https://www.f-106deltadart.com/ejection_seat.htm