Alarmed UK citizens convinced they saw an armada of UFOs in the sky have flooded radio stations with their calls of distress. Hundreds of people witnessed strange orange orbs hover over Liverpool, north England, on Monday, British tabloid The Sun reports. The sightings prompted widespread speculation about the possiblity of an alien invasion. Former policeman Steve Rafferty, 50, and his daughter Emma, convinced they were having a close encounter, filmed the unexplained phenomena on a mobile phone. [ Visit Website ]