TSA standing around to conduct gate searches for delayed or cancelled flights
At airports across the country, I've seen TSA position themselves to conduct gate searches for flights that I knew to be delayed and that the TSA sooner or later realized were delayed too. On one of my more recent flights, TSA gate searchers wasted nearly 2 hours hanging around the gate area. And that was for a delayed flight rather than for a flight subjected to cancellation.
Apparently the country has plenty of money to waste on the TSA standing around doing nothing.