Not sure about the security leaving luggage there?
Exactly.
They could also end up on a different flight! lol
Given one flight per US Airline per day, it would have to end up on a different airline.
Very possible. The counters are not by airline. I was next to luggage going on a different airline. The agent just put our bags behind her. Other agent put someone elses bags next to them. They almost wheeled mine away as I was there.
