In the short, they first appear practicing for the air show. Then they landed, so Mater had a chance to say that they're looking good. One of them thanked Mater, then another asked if he's coming to the air show, and Mater said that he will.
Then later, when Mater was learning how to fly, they were about to practice again. But then, the Black Hawk came with a sprained wing from their last maneuver, so they needed a new plane. Then they saw Mater, and they were amazed about his backwards flying, so they asked him if he would like to be in the air show with them.
Then came the air show, where they performed some air tricks, like a tic-tac-toe game, bowling, and then drawing a picture of Mater. Then came the finale, where 2 of them used a rope to bounce Mater up into the air. But then Mater was falling apart and then was falling. But Lightning McQueen caught him, and they finished their finale.