complete loada nonsense
next they ll be saying the US military have been conducting alien autopsies in some backwater in nevada for years

Nonsense you say? I have seen a UFO. I believe. Here's my experience:

"At 16:10 on Monday the 7th of April 2008 I left Paris, Charles De Gaul airport bound for Tunis. My flight number was AF 2384. (Air France) The aircraft was an Airbus A320 and was travelling at an approximate altitude of 35,000 Feet. Between 17:00 hours and 17:30 hours +1 GMT I was looking out of the window on the left side. I noticed in the distance above the cloud cover and slightly higher than the flight a large oblong shape in the distance. It had a greyish coppery colour. I watched the object for some time thinking to my self 'Could this be my first UFO sighting?' The object was sitting still in the sky. It looked solid. Not like clouds or anything explainable. As I was watching it I noticed to the right at the cloud level a small dark shape that looked like a fighter jet travelling in the opposite direction from my flight. It was small but I could just about make out the shape of the tail and nose. Behind the jet was it's slipstream, dark in colour. I watched the jet fly up over the cloud cover heading towards the object I was watching. The jet then turned right then ascended getting closer to the object. Then I saw the jet do a zig zag motion towards the object. I could tell the zig zag motion by watching it's slip stream. As it got closer (When the object was about 20 times bigger than the jet) I noticed the object get small very quickly then it disappeared as if it was moving away from my flight and the jet.

About 15 minutes later I saw the fighter jet fly in the same direction as my flight and descend back down through the clouds. Obviously going back to base.

I'm not sure what country we were flying over at the time but I think it was southern France

I am sure this object was a UFO. I can't explain what else it would be. And I don't think a fighter jet would be chasing nothing. If there were any other passengers onboard who saw this too I don't know.

But I am confide

As a scientist, I find it fascinating to read questions like 'Do you believe...' (i.e. Do you believe in God?) because such questions are fully-loaded; the answer is already decided on before it is given. For instance, to answer the question with 'I believe in God.' does not also mean that God is real and exists since 'believe' means to have faith in the existence of someone or something but does not mean to have proof of the existence of someone or something. To answer your question, Do you believe in UFOs?, has the same result no matter what the answer is because believing in the existence of someone or something does not also mean that you also have proof of existence; does not make it true (or false). In point of fact, the existence of UFOs is an established fact, so asking a question like Do you believe in UFOs? is a misguided. The question you should be asking is Do you have any evidence of UFOs? For instance, the only 'evidence' I have of UFOs is a memory of seeing something not easily referenced or categorized. Others may have more substantial evidence, and that's what you really want see. My type of 'evidence' is the same as Stevcolx, an example of the former not the latter. There are literally thousands of reports like this, but what you want is something more substantial. Ask more significant questions to get more significant answers.