A woman fell to her death from the Texas Giant roller coaster at Six Flags Over Texas on Friday, July 19, 2013, in Arlington, Texas. The odds of being killed while on an amusement park ride: 1 in 750 million. (AP Photo/The Dallas Morning News, Louis DeLuca)

Photo by: Louis DeLuca

A woman fell to her death from the Texas Giant roller coaster at Six Flags Over Texas on Friday, July 19, 2013, in Arlington, Texas. The odds of being killed while on an amusement park ride: 1 in 750 million. (AP Photo/The Dallas Morning News, Louis DeLuca)