Not offhand, but it isn't very many. The last time I checked in 2008, I was number 600 and, at age 60 I'd be number 400. The flow through situation will generate more movement than retirements. Despite the wailing about how senior Eagle is, the phrase refers more to length of employment rather than age. Many of our captains are under 50, IIRC, so it will be awhile before they reach mandatory retirement age.