They Walk Amongst Us !!

And there are 80 different species !

They refuse to share their superior technology with us until we stop 'warring'.


http://www.dailymail.co.uk/news/article-2535698/Aliens-walk-theyre-refusing-share-technology-change-warring-polluting-ways-claims-former-Canadian-defense-minister.html

He claims that 'a couple of their ladies dressed as nuns go into Las Vegas to shop and they weren’t detected'

Not sure how many Nuns walk around Las Vegas,probably lots of Hen nights maybe so you could get confused.Quite easy to mingle if thats the case !