We saw one set of red lights followed closely by a set of flashing white lights moving through the clouds.On Saturday April 18, 2009, at 8:33 PM, my daughter and I saw two sets of lights in the southwest sky. They appeared to be heading south. The lights were partially blocked by the clouds but the first set had three red lights in the front and two red lights in the back. The first set of lights was closely followed by five or six white lights flashing in unison in a circular configuration. As they passed over the treeline an aircraft passed over our house heading east.