https://7news.com.au/news/ufo/alien...ng-hundreds-of-reported-ufo-effects-c-6348715 Quoting 7News AU (news article) ''The report also showed how authorities rate different encounters with UFOs. There are “anomalous behaviours”, which can be rated as AN1, AN3 or AN5. AN1 includes encounters that have no lasting physical effects, including sighting of lights. AN3 includes encounters where people come within 150 metres of an “associated entity”, such as a ghost, elves or other “mythical/legendeary entities”. AN5 are classified as reports of injury and death.''