Is it a bird? Is it a plane? Is it Brexit?!
Actually, no, it is four Apache helicopters - which were filmed flying over the Fylde coast last night.
The military gunships were said to have flown over the Lake District before landing at Blackpool Airport at around 5pm yesterday.
At least three took off again, according to Twitter account @SaveBlackpoolAP, though one "stayed in Blackpool".
Social media was awash with humourous speculation about the fearsome choppers, whose thunderous arrival made them hard to miss.
Day Day Marcella said: "Training for after Brexit"
The Ministry of Defence said: "We can confirm the aircraft were conducting routine sorties as part of Exercise Talon Python.
"One of the aircraft was unable to take off due to an unserviceable landing lamp. REME [Royal Electrical and Mechanical Engineers] engineers have been deployed to conduct the repair today, after which the aircraft will resume its duties."
The two-week Exercise saw 3 Regiment Army Air Corps (3 Regt AAC) launch formations of up to four Apaches and two Wildcats from their base at Wattisham Flying Station in Suffolk on simulated missions to find and strike targets.