https://www.livescience.com/56886-arrival-movie-alien-contact-protocol.html

https://www.bbc.com/future/article/20160223-what-would-happen-if-aliens-contacted-earth

https://www.express.co.uk/news/science/1179496/alien-contact-end-times-seti-aliens-discovery-space-universe-news-stephen-hawking

https://www.theguardian.com/science/shortcuts/2016/oct/30/what-protocol-aliens-make-contact-arrival

https://www.scientificamerican.com/article/what-should-we-do-if-extraterrestrials-show-up/

https://www.smithsonianmag.com/science-nature/ready-for-contact-76322347/

https://slate.com/news-and-politics/2010/07/do-we-have-an-alien-contact-contingency-plan.html

https://www.japantimes.co.jp/news/2020/09/14/national/japan-defense-ministry-ufo/

https://nypost.com/2017/12/11/former-uk-official-reveals-plan-in-case-of-alien-invasion/

https://www.marketwatch.com/story/this-is-what-humans-might-do-if-there-were-an-alien-invasion-2018-05-09

https://www.military.com/video/logistics-and-supplies/military-equipment/us-military-preparing-for-alien-invasion/1564996010001