More of a rant...
Just tried using the mobile boarding pass with my iPhone for an AA mileage run; lax-dfw. Got to TSA 20 minutes prior but they refused to use My boarding pass. Ran to a AA kiosk which showed that I wasn't checked in, despite me checking in on my iPhone, and it wouldn't allow the printing of a physical boarding pass. Went to the desk which was unmanned; cleaning crew said everyone went home for the night even though there should be someone until 1230 per a phone rep. It was 1205 at this time. Ran back to TSA who said, "just forget it, your late anyways."
Now I'm taking the greyhound back to San Diego, I knew I should have driven...