![](https://flightsafety.org/wp-content/uploads/2018/02/unmannedaircraft_feb18_report_featured.jpg)
Drones were involved in 24 near-midair collisions (NMACs) with piloted aircraft during a recent three-year period at one busy U.S. airport, according to a study published in the Society of Automotive Engineers’ SAE International Journal of Aerospace.