 Flying Fortress  is the twenty-fifth episode of the Sonic Underground television series and the first of three episodes in the Chaos Emerald Crisis mini-series. It first aired on 31 March 1999 in France and on 1 October 1999 in the United States.
The 2003 season saw Kings Dominion become the final of several of the Paramount Parks to open a Drop Zone: Stunt Tower, now Drop Tower: Scream Zone. The 305-foot-high (93 m) Drop Zone at Kings Dominion was the tallest freefall ride in the world at the time it opened.
First is how to measure axle drop. With a straight-edge placed across the flat of the perch boss on the '42-47 axle at the bottom of the picture, measuring up to the bottom of the kingpin boss reveals a drop of 2 inches. The '37-41 axle above has a drop of 1 1/4 inches and the Model A axle has zero drop.