The Executive Summary corroborates a lot of the event with what looks like a lot more then just 1 or 2 other people.
I'm not conviced by that executive summary, it contains too much hyperbole and I think it's dubious or possibly fake.
It was suddenly and mysteriously "obtained" by George Knapp - an investigative journalist for KLAS-TV, yet it contains details and accounts which seem quite detailed and sensitive. Other people on twitter have poined out that it's odd, that the report has references to Wikipedia, combined with the way it's written - I'm going to bet it's fake.
For example this line;
Based on the lack of detection of any unidentified sonar contacts it is highly unlikely that an AAV operated below the surface of the ocean; it is possible that the AAV demonstrated the ability to be cloaked or invisible to the human eye based on pilot reporting of the water disturbance with no visible craft.
Things like this just don't read right to me, there's too much supposition; how can the author of this document say that it's "highly likely" than an AAV operated below the ocean, or that it's possible for such a thing to be invisible to the human eye?