The claim: This closed airbase still handles a lot of traffic, and has a "state-owned" prison compound on the southern part of the facility.
What it really is: It's actual name is the Grissom Air Reserve Base, and it is not closed.
The claim about the state prison there is true, and has a population of over 3,100 medium to high security prisoners there (which would mean that it's pretty full). This does not mean however that the prison is a FEMA camp.
The base also has a joint-use agreement allowing for the runway to be used by civilians as well.