I think this is where a lot of the bad feeling stems from with some of us. (Although, obviously we seem to like arguing)
Here goes... That's another statement of certainty that to me, seems not only lazy, and 'snobby', but it's verifiably wrong.
The most famous case in the UK occurred on an airforce base with multiple 'qualified' witnesses. Within 24 hours an investigator was sent out to find out what the hell was going on, only to be told that 'the thing' was back. Second night on the trot. Out he goes with a group of airforce people, and he too becomes another witness.
The most compelling cases, for me, are the ones invloving recorded radar data, backed up with a scramble of airforce jets who are guided to the 'blip', and who then go on to describe what they see: a ufo. (That's often the crew of at least two planes all seeing and reporting the same thing.) When the thing shoots off, it disappears on the radar too.