I work for a defense contractor in the Reading area. My boss told me that one evening while there were scattered clouds he heard a loud propeller sounding noise and through the broken cloud light he could see 5 predator-like drones flying in a chevron formation making the approach to I believe heritage Field a private airstrip. He called his close friend that is high up at Limerick and asked him had he heard anything about it. His friend told him off the record that these have been brought in by the military to monitor 24 hours a day, the influx of UFO Sightings in the restricted airspace around Limerick. He told him the UFO's are not military and have been a concern so much that the government is spending serious resources on what is hovering over the site. There is a military base near (within 50 miles I believe) the power plant and any attempt they have made to observe or chase the UFO Sightings has been futile. The date I have posted is approximate because as far as I know the drones may still be in the area The time I listed is the time the drones arrived but the UFO Sightings were almost nightly and lasted through out the night. mufon cms# 85806 This UFO Sighting incident occurred on 12/15/2016 & reported on 8/10/17