Okay I have what's probably a dumb question. I just used the app for the first time to check in for my flights. It checked me in just fine and I get a message that says "You are now checked in. Go to a kiosk to print your boarding pass." There's no sign of a mobile boarding pass on my phone that I can see. Where do I look for the mobile boarding pass? I have an Alaska Air flight in my itinerary (coded as a DL flight) if that makes a difference.