Just to extend on what Ternez is saying...

If you are doing a domestic US day trip, can you receive the boarding passes for both flights at the orgin airport.

For example...if I am flying TPA-ORD-TPA, with a meeting in ORD (not just turning around in ORD, but several hours inbetween flights), can I get my BP for ORD-TPA in Tampa that morning?

Another example...TPA-ORD, spend the day in ORD, then ORD-SEA that evening. Same as above, but going to a third city. Can I get a ORD-SEA boarding pass in TPA?