Miller described the drones as "very large," noting "someone described the drones as large as an SUV." They appear larger than the typical drone one could buy at a consumer electronics store and were able to fly around and stay under control despite heavy winds buffeting the area Thursday night, which prompted a wind advisory from the National Weather Service.
"There's definitely concern. We do get reports of drone activity, but they're usually like, ones that you purchase," Miller said.
"Last night was interesting just because of the wind that was present, one of those small hobbyist drones wouldn't be able to fly. [The] larger, I guess professional [drone] activity that was out there gave greater concern, especially in their ability to navigate the weather."
With drones of this size, any area where they land would be pretty conspicuous, he explained.
"They have to be landing somewhere. They're very large, and I know we're working with state police and federal authorities to try to figure that out," Miller added.