WASHINGTON (DC News Now) -- As a group of lawmakers received a classified briefing on the mysterious drone sightings along the East Coast, a Maryland-based drone expert is offering her insight on the sightings. Luisa Winters, co-owner of Mid-Atlantic Drones, said while she does not believe there is any threat, she understands -- and supports -- the push for answers. Answers on Tuesday came in the form of a joint statement from the Department of Homeland Security, Federal Bureau of Investigation, Federal Aviation Administration and Department of Defense. The agencies wrote that the FBI "has received tips of more than 5,000 reported drone sightings in the last few weeks with approximately 100 leads generated." WATCH: Mysterious ‘SUV-sized drones’ spotted in Bowie "Having closely examined the technical data and tips from concerned citizens, we assess that the sightings to date include a combination of lawful commercial drones, hobbyist drones, and law enforcement drones, as well as manned fixed-wing aircraft, helicopters, and stars mistakenly reported as drones," the statement read. "We have not identified anything anomalous and do not assess the activity to date to present a national security or public safety risk over the civilian airspace in New Jersey or other states in the northeast." Winters told DC News Now she believed many of the videos she had seen of apparent drones were actually manned aircraft. "I mean, they even have positioning lights like red and green for left and right," she said. She said the recent discussions of drones and flood of videos could make people believe they were looking at drones, when really it was otherwise. However, she did say many of the videos did look like drones. She added this is likely not cause for concern. "It's not illegal to fly at night," she said. "There are so many reasons to fly at night: thermal roof inspections ... also for some cinematic purposes." She also said the size of some of the reported drones is not a concern. "If these drones were doing something nefarious, something evil, would they announce where they are with lights? I don't think so. So I myself, I'm not worried at all, neither by the size of the drone or ... the fact that they're flying at night," she said. A number of law enforcement agencies in the DMV are urging people to only report drone sightings in specific instances. Loudoun County Sheriff Mike Chapman said his department has only gotten one or two calls about drones recently. He told DC News Now reportable instances include "if you see them around areas like, for example, a power plant, an airport, an area that's restricted."