Possible sightings were also reported in Germany, Norway and Lithuania. Drones have been seen near military facilities including Denmark’s largest, following a series of incidents that caused air disruption earlier this week. The Danish Defence Ministry confirmed that drones were sighted near multiple military installations overnight, but did not specify which ones. The other military installations have not been named by Danish state media. The incursions come just days after drones over Danish airports – some of which also housed military facilities – forced airports to shut down and close their airspace.