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Contra Costa firefighters stand watch as a Reach medical helicopter lands on the baseball field next to the Pleasant Hill Aquatic Park at Pleasant Hill Park in Pleasant Hill, Calif., on Friday, July 11, 2014. Pleasant Hill Aquatic Park conducted water safety demonstrations at the pool today. Part of their safety demonstration was having Contra Costa firefighters from Engine 5 and Reach show off their equipment that is used in medical emergencies. (Jose Carlos Fajardo/Bay Area News Group)

Pool Safety Day

Lifeguard Hailey Morrissey, 17, above left, demonstrates how to perform a water rescue with junior lifeguard Mckenna Jiannalone, 11, during Pool Safety Day at Pleasant Hill Aquatic Park. In addition to water safety instruction, firefighters, paramedics and a personnel with a Reach medical helicopter were on hand at the July 11 event with some of their equipment that is used in medical emergencies. Taking a look at the helicopter, right, are Madison Scharetg, 7, and her sister Sydney, 4, of Pleasant Hill.