"THE INVISIBLES" 

This race is known to have been "seen" near high-security areas.

They are almost completely invisible to the naked eye.

Both the USA and Russian military have developed technology that allows them to track them down on radar (just the ships).

3 things are known about this race:

1- they leave a sour smell when they are near.

2- when they are near windows you can "see" their reflection as a "smudged-like" figure (have been caught on cctv footage)

3- when many dogs (or only 1) start barking with no apparent

reason, it is possible that they are nearby (or Reptoids/Reptilains)

They come from constellation Mensa. Purpose of presence: unknown