iPhoneMaster13: How will alien disclosure be revealed?

Let's speculate how alien disclosure will be disclosed and through what sources if any?

Some possible scenarios: - Mass sightings all over the world - nah, would probably scare people - Through government - probably not - Leaks - very much possible - Channelers - if they've established first contact and can prove it, yeah why not? But probably not

Please fill in! Personally I believe leaks is a very possible scenario to initiate disclosure.