No question Cazale was a great actor whose life was cut short way too early.

One of the things that puzzles me is that while Fredo was left out of the loop on a number of things, he must have had some power in the family because in the boathouse scene with Hagen, then night of the attempted hit, Michael tells Tom that he is going to be the Don, and he will have power over the entire family. In this he specifically mentions "Fredo AND HIS MEN" which indicates Fredo had some kind of regime under him. Is this a script error, or if it isn't doesn't it imply that Fredo had operartions beyond whorehouses, mickey mouse nightclubs and airport limo service?