In my opinion, there is no way the us govt or any human organization has these capabilities without external help.
I don't watch YT videos because it is one of the biggest timesucks in life. However, I will make exceptions to feed my curiosity regarding a mindblowing video post from nostr:nprofile1qqsxcgma3va3yqj3cwxzxrqxm8jg7rfszajhckm9erpkzyhtzhzj46cppemhxue69uhkummn9ekx7mp0qyvhwumn8ghj7un9d3shjtnndehhyapwwdhkx6tpdshszyrhwden5te0dehhxarj9emkjmn9atgqhm about the great mystery that is MH370.
https://primal.net/e/note1msulnk4t7z9jdrxcrwff77e8m57gwfargk3vs5ptnxrfta6pq9eqpu7pea
Ashton Forbes, a "researcher" has put together a compelling argument and evidence of how that plane magically disappeared. It really is quite fascinating.
Discussion
You mean aliens? ancient civilisations? Some say the tech birthed from discoveries during the Manhattan project.