The “official” line on the Roswell incident wherein a crashed spacecraft was for decades declared a weather balloon was exposed, but the admission that it was a secretly developed plane also is a lie, and there was no mention of the ET who survived in captivity for a few years after the crash.
Naturally nothing was said about governments’ collusion with ETs, who exchanged their knowledge of technology for noninterference in their experiments with humans with whom they had soul contracts. Nor any mention of the ET emissaries who offered governments even more advanced technology for guarantees of disarmament so your world could live in peace for the benefit of the entire universe.
Q. Were Roswell ETs future humans traveling back in time to adjust the future?
No. The four crew members of one of the civilizations that are helping Earth were in a small spacecraft on a reconnaissance mission in that area. Two were killed in the crash; one lived briefly; the other, who was not seriously injured, was taken by an Air Force general to a base hospital and soon afterwards, was flown to a base in the Midwest where he lived for over a year. Although never abused, he knew that never again would he see his family or homeland, and it can be said that he died of a broken heart.
Source: Matthew's Messages, March 13, 2005 and December 5, 2010.
See also the Verdant ETs perspective on the Roswell crash here.