If Senators are concerned about things being 'well-run', one needs only look at the improvements made in Florida's disaster preparedness under RD.

Florida's consistently had good disaster preparedness. It's one of the things that even Democrats would praise about Jeb and Rick Scott.

Why? She's never run as large an organization as Ron DeS has.

True, but she has more substantive familiarity with the Defense Department than DeSantis. It's been one of her main areas of focus, and she's been on the Senate Armed Services Committee for about a decade now. She deals with DoD all the time; governors have minimal exposure (if any) to the department.

Perhaps DeSantis would have an easy appointment process. But it is somewhat unusual for a SecDef pick not to have any recent or high-level experience with the defense department at all, either from the civilian or military side. Unlike some of the other agencies, I think there are more than a few Republican Senators who genuinely want Trump to pick someone that he thinks is very qualified to run the military, rather than being chosen for other political considerations (like, say, making sure the "right" person is chosen to fill Rubio's senate seat....)