Residents of Glendale and Peoria, Arizona woke to find yellow fliers posted around their neighborhoods warning them of "Operation Killer Bees." Apparently, there was to be widespread aerial spraying later that day to eradicate a killer bee population that had made its way into the area. Residents were warned to stay indoors from 9 am until 2:30 pm. The phone numbers of local television and radio stations were provided. On the bottom of the flier the name of an official government agency was listed: Arizona Pest Removal Information Line (For Outside Operations Listings). The first letters of this agency spelled out "April Fool." Few people got the joke. Radio and television stations received numerous calls, as did the Arizona Agriculture Department. Many worried residents stayed inside all day, watching anxiously for the pest-control planes.