In Europe, where this is being written, and possibly further afield, news reports are again full of drone sightings closing airports. The reports have come from Scandinavia, in particular Denmark, where sightings have been logged across the country. Back in the last decade, we covered the saga of British airports closing due to drone sightings. In the case of the Danish drone sightings, it seems that credible evidence has been shown for some of the events. We trust that their response will be sober, proportionate, and based on evidence for all to see.