Never seen an equipment bid so to speak, once airbus,or boeing, one tends to stay there until command time..then assigned/offered commands where needed by the company...GF have NEVER made anybody redundant when fleets have been changed, or downsized..they always seem to find somewhere to put you...it will be interesting to see how the 767 retirement unfolds if in fact it does..and where crews are placed...the jury is still out on that as far as we know now...lots of rumours..sure at some level a plan is in place, but at this juncture, all we can do is wait until we are in the "need to know" crowd...