Author Dr. Michael Salla shared his research into Pres. Eisenhower's meeting with extraterrestrials at Edwards Air Force Base, which allegedly took place 50 years ago. According to witness testimony and whistleblowers who Salla said had seen documents that referred to the incident, Eisenhower met with a group of "Nordics" (tall humanoid aliens) who were trying to establish a relationship with humanity.
The Nordics wanted the US to give up their nuclear technology because it could potentially cause damage to the space/time continuum, but Eisenhower refused their request, Salla said. Later, the President struck up a deal with another alien race, the Greys, receiving a technology transfer from them in exchange for an agreement to abduct civilians for short periods of time, though Salla characterized the deal as a kind of "forced surrender," on the part of the US.
Speculating on the agenda of the Greys, Salla said their human abductions and biological tests could be a plan to "replenish their genetics," though they may also be trying to "subvert or co-opt" institutions, by producing hybrid individuals to take over key positions. This new hybrid race might also serve to house and preserve the "hive consciousness" of the Greys, Salla added.