TLDR: TSA Collective Bargaining under attack by 2nd trump administration. Most TSA employees voted trump. (I retract this statement. While the American Federation of Government Employees, who represents TSA workers, endorsed Harris, TSA is very similar to law enforcement and it's logical to assume that they lean towards trump. But I haven't seen a direct source for it, so this is just my own speculation)
the union officially endorsed harris, but i'm sure there's enough power-tripping under-educated magats working for tsa to at least make it 50/50, if not tilting red.
This is, at least somewhat hilarious/ leapord eat face, because of all the federal workers I've ever interacted with, TSA agents, for whatever reason, have consistently been the most MAGA/ pro-Trump of the lot.
To the point where when I was traveling near the election, they were actively dropping coded language to clearly pro-MAGA passengers.