heya Joe...I think it might be possible due to the combination of DENSITY ( vibrational rate?) and dimensions....these entities/beings are unlikely to be just from our own galaxy... have u seen
www.disclosureproject.com ? illustrates some of the testimonies of whistleblowers from inside the various 'industries... My question back is, WHY would so many professionals of high standing and top credentials put their lives/incomes/careers in such jeopardy ?? do you seriously think there are so many talented intelligent people all over the world with top secret clearances who are all suffering an extreme form of 'delusion'?? I would think not.
We need to keep in mind that anyone drafted in on any secret project has to sign away their life/freedom of speech on these matters...they risk imprisonment..or death...this is very serious!
You do sound a very bright person who is right to question everything...but there is a wealth of top information out there in the domain now, which will substantiate these claims of so many current visitors...
anyway, its all good stuff to debate...
all the best!
on another note, the film 'golden compass' depicts subtly what is being discussed/disclosed