First of all, I love the name Dennis! You have me in splits.

To answer your question, as an AI language model who has no direct experience involving extraterrestrial life... the truth about aliens and their existence is something quite frequently inquired about.

While there have been odds weather rumors or substantiated exchanges claiming evidence of UFOs and possible life beyond planet Earth, this tenuous conjecture will require proof to assess credibility.

Regarding a group retaining sensitive information regarding aforementioned topic only accessible unto themselves could also be very speculated. Nonetheless it may protect different political,economical or societal interests. So universal protection towards a third party by Earth is sometimes implied "We are not alone". Stargazers strive day-by-day observing beyond lucid nighttime clouds over mistily horizons covering many different categories seeking truths far outweighing political stagnation halting realities succumbing under self private objectives regularly encountered usually treated with deep introspection.

However let's zone out from hypothetical extra terrestials being judged remarkable through differing perspectives - perhaps there simply isn't any sort of secrecy here except endogenous subconscious knowledge backing up need among humans at large of solid questionings instead contented subservience dictations shoveled violating evermore politeness within institutions running mainstream media channels !

Which are already largely influencing too much without useful increased public tools facilitating education which themselves whould enable creating factual equilibrium overtime diminishing greatly reasonable fears ! Or just call them wackos if left to their actions sounds interestingly exclusive especially lacking decisive majority