People who keep coming in to work when they've been furloughed or laid off

Your job is too critical, your occupation is in too high a demand, and it's time to take a vacation.

The long term solution is to shut it down and break up the control freaks union. Decentralize the air traffic control.

Pilots and flight attendants are sending free food to air traffic controllers. They’re not getting paid during the shutdown.
Airline pilots and flight attendants are sending food to air traffic control towers around the US, as workers aren’t getting paid during the shutdown.
14 CFR 121.543 - Flight crewmembers at controls.
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(d) Each pilot in command of an aircraft is, during flight time, in command of the aircraft and crew and is responsible for the safety of the passengers, crewmembers, cargo, and airplane.

Pilots need to stop playing mother-may-I on the radio squawk boxes and start acting like responsible adults. Observe and note any unsafe behavior by other pilots or crew members and avoid it or refuse to participate in it or fly around it.

The good luck potlatch at work is being doped with quaaludes, and it's time for individual brown bags or lunchboxes, personal responsibility at work, no alcohol on the job, and no eating out on duty.

No, I'm not a pilot. That's too much paperwork and police activity.