The fireworks show began in 1990 at the Kentucky Exposition Center, where more than 35,000 people attended a concert by Janie Fricke and a 4,000-shell fireworks show. In 1991 the event moved to Waterfront Park, and the Zambellis began handling the fireworks. The Air Show began in 1992, and has featured such notable aircraft as the Harrier, the B-2 (Stealth Bomber), and the F-117 (Stealth Fighter) as well as the Apache Attack Helicopter.The event expanded rapidly in scale and attendance; by 1996 more shells were exploded in the first minute than in the entire 1990 show. In 1997, the Air Force designated Thunder Over Louisville as one of two main events for its 50th anniversary celebration. More than 125 military aircraft performed that year, making it the largest combined fireworks and air show in the United States.