Here is a pretty good article laying out the case for a professional emergency manager to be the next FEMA administrator, Why Trump needs to appoint a pro to head FEMA.
I did hear from one person that their governor is being vetted as the possible FEMA administrator designee. I would agree that a governor, per the linked article above, is not an emergency manager, any more than a race horse owner would make a good jockey. Two different sets of knowledge, skills and abilities. But hey, what do I know ...
