There plenty of convincing evidence around, for example the COMETA report which was done in France by high ranking Military, Space and Space Science
It was a comprehensive professional study conducted by respected personell and its final conclusions were that not only was the UFO phenomenon real,
but further more likely Alien in nature and beyond this its recomendation was that the EU and UN take actions to force the US Military to disclose
what they knew because they were clearly covering up.
Why is COMETA little known? Because US and British media refused to run the report in the news, the blacked it out almost completely.
The people who over saw this study and report were:
General Bruno Lemoine, Air Force (former auditor of IHEDN)
Admiral Marc Merlo, (former auditor of IHEDN)
Michel Algrin, Doctor in Political Sciences, attorney at law (former auditor of IHEDN)
General Pierre Bescond, engineer for armaments (former auditor of IHEDN)
Denis Blancher, Chief National Police superintendent at the Ministry of the Interior
Christian Marchal, chief engineer of the National Corps des Mines and Research Director at the National Office of Aeronautical Research (ONERA)
General Alain Orszag, Ph.D. in physics, armaments engineer
For any skeptic wanting to see credible research and conclusions they should take a time to actually study, the report in English can be found
There have been many credible sources speak on this issue, the former British Director of Security also condemened the military and the media over the
handling of the UFO phenomenon and stated it was critical that the subject become the interest of professional scientific study and fact finding
because should the thrat ever turn hostile, we need to know who they are, where they come from and what they want.
Problem with skeptic views is they only read what they choose to read.
These kind of sightings are common place and studies have been done, recomendations have been made and militaries have been covering that up for a