 As the train leaves the station , a recorded message , " Clear for Takeoff , " is played . Afterburn then climbs its chain lift hill , reaching a peak height of 113 feet ( 34 m ) . After a small pre @-@ drop , the roller coaster train then drops to the right before entering its first inversion , a vertical loop . Riders then travel through an underground trench and enter an Immelmann loop which sends the train in the opposite direction . The train then drops towards the ground , climbs back up , and spins through a zero @-@ g roll , an inverting element where riders experience the feeling of weightlessness . Afterwards , the train dives back towards the ground and enters the two @-@ inversion batwing element which crosses through a tunnel underneath the park 's rear entrance . 
