A friend of mine and I were there at 9 am in January after 911. I had bought a truck in Florida and we were flying down to bring it home. He had been after me to get a haircut and trim by beard before we went to the airport, guess I looked like a terrorist, but I didn't. The place was packed. We got in a line and before long security came and pulled us out of line and took us to another area and did a pretty thorough search of our carry on and our person. Very interesting morning 😁
It is okay, everyone is "seated" in the plane and you know the virus doesn't get you if you are sitting.
BTW - Mondays at 9am at PIT is a cake walk, try 6am and you'll never want to fly out of there again.