Ouch, that's quite a prank....

1993 – As an April Fools’ prank, DJ Dave Rickards told listeners of KGB-FM in San Diego that Space Shuttle Discovery had been diverted from Edwards Air Force Base and would be landing at Montgomery Field, a small municipal airport with a 4,577 foot runway. Thousands of people went to the airport to watch the purported landing, causing traffic jams throughout Kearny Mesa. Moreover, there wasn't even a shuttle in orbit at the time.