Fact check
Is it true: Operation Skywatch Chemtrail Claims?
There's no solid evidence for it.
There is no evidence that a covert programme called "Operation Skywatch" sprays chemicals from aircraft. The only documented Operation Skywatch was a 1950s civil defence network of volunteer observers watching for Soviet bombers, and it involved no spraying. Contrails are explained by humidity and temperature at flight altitude, and independent air sampling finds no unusual levels of the claimed substances.
The claim
Claims that historical Operation Skywatch or civil-defense aircraft observation programs prove modern chemtrail spraying.
Key evidence
Contrail persistence varies significantly between flights
UC Irvine 2016 survey: 77 of 77 atmospheric scientists found no evidence of covert spraying
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