An autistic boy who loves emergency vehicles and the sounds they make could not hide his delight when a kindhearted police officer showed him around his vehicle – and even let him try out the sirens. Five-year-old Abel Aparicio, from Riverside, California, loves listening to sirens and admires police officers, fire fighters and ambulance workers, his mom, Flor, 31, said. One of Abel's favorite toys is a police car, which he often plays with around the house. But on May 5, Abel got to experience the real thing when he and his mom were collecting his older brother from middle school.