While curiously checking https://nasstatus.faa.gov/ for airport closures (with the shutdown and risks from a lack of available flight controllers) I saw the above warning for Palm Beach International airport.
Closed TO AIRCRAFT EQUIPPED WITH WEATHER MODIFICATION OR GEOENGINEERING EQUIPMENT
I blinked and thought "I do not believe we actually have weather modification capabilities, do we?". Then I thought... wait a minute, this is Florida. Sure enough, a bit of searching and I found this lovely gem:
Florida has officially banned chemtrails. Sort of.
On Friday, June 20, Gov. Ron DeSantis signed a controversial bill banning "geoengineering and weather modification activities" to curb projected efforts to fight climate change and suspected efforts which some conspiracy theorists have claimed are used by individuals or government agencies to spread toxic chemicals on an unsuspecting populace through the white trails in the sky left by airplanes.
Source: Florida bans 'chemtrails' with new geoengineering and weather modification law - Wed Oct 08 2025