Fast forward 21 days and the police bust the apartment door in and arrest him for drug trafficking and possession of a stolen firearm as a felon (according to the newspaper).

It has a kegorator.I live out in the country and have a few firearms. 

A small city near me had what they called the "One strike ordinance", if a rental had anyone arrested for a drug or firearms offense they could shut the unit down for 6 months so nobody could live there!

Also am a firearms instructor :-)

Your municipality probably has laws against the negligent discharge of a firearm and/or a tenant that poses a danger to the neighborhood.

Are there any legal issues with carrying a firearm while on your rental property just as an extra precaution in Florida? 

Tenant screening: Hi everybody, was going over background check for applicant and while looking up a judgment in the circuit courts i notice three cases against him first one was in 2008 for carrying a firearm at the age of 18, second one was for a DWI in 2010, and third one was for a pending trial that is for DWI and carrying a firearm in 2017.currently the applicant meets all my minimum qualifications and am not sure if i can legally deny him due to my finding.

I had 3 door knock teams.... one man one women... women kicked but men where there for safety.My wife is a lifelong realtor.. and there are certain things you need to do to be safe.. she kind of has a sense.. she gets crank calls and kind of has learned what situations not to be in.one of the major ones is alone with male.. she opens the house and stays on the front porch.. never gets trapped in a bedroom and would never go into a basement etc.talk to your real estate agent lady friends.. there are courses.having a firearm while great.. you have to be a quick draw and most can't hit the broad side of the barn with a pistol especially in a high stress situation..

I'm not sure where I am going with this, but what are the thoughts on someone having a need for an emotional support animal(prescribed by psychiatric doctor) and carries a firearm?

You just can never be to sure, and being in an industry where it is easy to get someone alone, and not really knowing who you are working for, it is important to protect yourself.So make sure your daughters and wives know how to use your firearms!