Keith Johnson, Deseret News
Seven-year-old Tristyn Sadler, left, Katreal Scheid, 8, and Emma Scheid, 9, ride the Star Trooper during Wednesday's opening day at the 72nd annual Salt Lake County Fair in South Jordan. The fair is held at the Salt Lake County Equestrian Park and Events Center at 11400 S. 2200 West. It runs through Saturday.

Seven-year-old Tristyn Sadler, left, Katreal Scheid, 8, and Emma Scheid, 9, ride the Star Trooper during Wednesday's opening day at the 72nd annual Salt Lake County Fair in South Jordan. The fair is held at the Salt Lake County Equestrian Park and Events Center at 11400 S. 2200 West. It runs through Saturday.