Winter SkyBy: Patricia Reilly Giff Sirens! A scary sound, especially to Siria, whose brave pop is a firefighter. Siria loves everyone at Pop's city firehouse. She also loves to study the stars. Her mother named her after the brightest start in the winter sky. When Siria hears sirens, she sneaks out to chase the trucks, to bring Pop and the other firefighters luck. She'd be in big trouble if she ever got caught. Good thing her best friend, Douglas, is always by