Why is the rear seat ejected before the front one? On aircraft with 2 crew placed one in front of each other (tandem) equipped with ejection seats, the rear seat is ejected before the front one (described here for the F-14).


Why is the rear seat ejected before the front one? 
Is an aircraft without ejection seat (e.g. glider) evacuated in the same order and why?
If the front seat ejected first, the drag would probably bring him too close in the trajectory of the rear seat, thus making a collision of both probable. 

Since the rear seat is ejected first, it experiences drag earlier than the front seat and will thus not have an increased probability of hitting it.