That sure looks like a false canopy painted on the bottom, right down to the canopy rail between the front and rear sections
The A-10 is a very interesting airplane, different from anything in the US inventory in many instances. It is the only airplane ever designed around its gun. It uses a multi-barrel 30mm GAU-8 Avenger cannon (
Here Is A Photo of one beside a Volkswagen for scale!). Each cartridge is about the size of a Coke bottle and it will fire up to 4,200 of them a minute.
Survivability was most assuredly a key design feature. The pilot sits inside a Titanium "Bathtub" to protect him. The engines sit up high and in between the two rudders to help mask them from heat seekers. It is slow, flies low, and is tough as nails
Years ago I worked around Fort Campbell, KY a lot and used to see them support ground troops in mock combat. It's a sight to see!