According to the whistleblower, the aliens that are visiting us aren't bringing candy and roses. There have been deaths and some of the visitors are kinda malevolent. I'm sure there are more reasons why the govt is keeping this a secret other than trying to hide the technology. The whistleblower said that there is a loose agreement to cause no harm but I'm not sure how loose or tight that may be. Maybe the govt doesn't want us to know because there would be questions. Mainly questions about our safety and the ability of the govt to protect us. They don't have the answers we want to hear. If we haven't generated an atmosphere of cooperation with them after all these decades, disclosure is not going to change that. Having said all that, if we have all this proof locked away somewhere, I still want to know.