[poderoso]

I guess it depends on what you do in the "Newberry Dilemma" (as said earlier in the topic).

If you shoot him down, the mission fails and you (should) get "Final Flight" as last mission.

If you don't shoot him down, but shoot down the bomber (whether alone or together with Newberry) you will get "mission succes" and you will have "Florence" as the last mission.