from a Kennywood supervisor. According to a park source, a similar malfunction occurred a few years prior to the incident. No injuries were reported, but a few riders became nauseated due to motion sickness. Thunderbolt On May 17, 1968, a 15-year-old boy from Greensburg, Pennsylvania, fell to his death after standing up on the ride. On July 9, 1999, there was an accident on the Thunderbolt when operators failed to brake an incoming train, which collided with the train being loaded. 35 people were injured in the crash. After the accident, the headlights on the cars were partially removed because the electrical system did not hold up well against the vibration of the cars. The Whip On May 31, 2002, a 29-year-old female guest from Monroeville, Pennsylvania was killed when the roof of The Whip collapsed during a microburst. On July 20, 2007, a trial jury awarded the victim's family US$1.945 million. Kishkinta Disco Dancer On May 12, 2016, the ride suddenly malfunctioned killing one 25-year-old employee and injuring nine others, all of which were also park staff. The accident occurred during a test run before re-opening for the first time since heavy rain flooded the Chennai area five months earlier. Knoebels Crystal Swimming Pool On July 6, 2011, a young boy was found face down in the pool. By the time the ambulance arrived, lifeguards performed CPR and were successful at getting a heartbeat and the boy breathing on his own. He died later at Geisinger Medical Center from trouble breathing. It was later determined that the child suffered from a pre-existing heart condition that is associated with Noonan syndrome. On July 16, 2016, another young boy died after he was found unresponsive in the swimming pool. He was rushed to a nearby hospital where he was pronounced dead. The incident may have been caused by a pre-existing medical condition. On August 15, 2016, an 11-year-old girl from Hellertown, Pennsylvania was injured and remained in critical condition when a 40-foot tree toppled on her family's campsite. At around 4:30 pm when a storm occurred during the time when they were camping at one of the campgrounds, the tree fell due to the strong gust of winds. The girl, her father, and her two siblings were all taken to a nearby hospital for treatment. Impulse On March 26, 2015, a worker was injured and suffered cuts on the back of