Guzzler
A KLM reported seeing a (toy) balloon about 1 1/2 miles away on his right hand side about 6pm. Hence the comment about his eyesight
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Read through the "UFO" file at Heathrow in the late 70s. 1 stood out from the rest - a BEA trident and TAP B727 going in opposite directions, if I recall, and something passed between them. Seen by both sets of crew and passengers!