If by "aliens" you mean the same demonic entities channeled by the Nazis when they built the first "UFO" in WW2 era,...

Originally shared by CandyJane

If by "aliens" you mean the same demonic entities channeled by the Nazis when they built the first "UFO" in WW2 era, then came to the US during Project Paperclip, bringing the Intel to build these things here, then yes.
http://youtu.be/hMVefx6knMo