for 30 minutes, all landings were suspended. aircraft and other airports were heading to the airport were halted. it could have been much worse. days before christmas, multiple drone sightings at gatwick airport outside of london resulted in more than a thousand flight cancellations and caused airlines an estimated $60 million. in the u.s., incidents involving drones and aircraft's are on the rise, from february 2014 through april of last year, the ffa says they were more than 6,000 drone sightings near airports. among them, november 2018, 15 miles from boston's logan airport, a delta flight encountered a drone. july 2018, san francisco international, a drone is plotted on the tarmac. april 2018, the honolulu airport, pilots report two drones. the university of dayton which simulated a midair collision