Taken a couple of days ago - my virgin flight in the USA. Being under 250g all I require is the Trust certificate. Was still a bit nervous flying 
If I use my extended battery then I would need to register the drone and display the number etc.
This is in Naples, on the west coast of Florida. If you fly around here, just bear in mind you can’t fly in any of the state parks - however just like the UK, there are small pockets which are outside, or between even in the Everglades. Hoping to grab a few more on my trip in January.