Megan - surely Bill Weaver's doesn't count as an ejection, nor a wholly successful one; not only was it was not (as far as Bill could recall) a deliberate initiation of the seat (the crew were probably thrown clear as the aircraft disintegrated), but sadly Jim Zwayer (Lockheed systems specialist on board at the time) did not survive.
As my post said he didn't use the seat, in fact his straps were severed by the forces involved in the aircrafts break up thus separating him from the seat, the two crew were thrown clear as the aircraft broke up, Jim having his neck broken and thus dying from the break up g forces involved.