This particular drone strike occurred near an airport in Canada, while on final. I’m really happy that there were no injuries to the student pilot or instructor from this event. It’s very interesting that the CFI (and evidently mechanics?) didn’t connect this accident with a drone, but instead thought the cause was the impact of a bird strike. I wonder how many other incidents that have a root cause of “bird strike” were actually caused by a drone? Clearly, the risk of a drone strikes to small aircraft is real, though it’s likely we’ll hear nay sayers label this as “just an isolated, rare event”. Kudos for the police department that sent a detective to the airport to inform them of the real cause of the accident. Absent a software cage for the remotely piloted aircraft, it’s easy to see how it could wander 100’ above the 400’ cap. Failure to comply with regulatory pre-notification requirements - that’s another discussion. Do active law enforcement actions allow ‘bending’ or breaking airspace restrictions and other aviation rules? For drone operations, is the 400’ cap determined as feet above the GROUND, or feet above the nearest obstacle within some defined distance?? Is the mandatory ATC coordination distance measured from the nearest exterior boundary of an airport, the runway, the traffic control tower, or the lat/long of the center of the airport? I don’t think I’ve ever seen mention of any clearly defined point, in the US at least, to determine when various maximum altitudes or distances from airports kick in for drone operations, or where exactly coordination with airport management or ATC is required.