That $100 million doesn't do much when you start forcing full-timers to do split-shifts every day. Heck, they even make part-timers do split shifts.
Yeah, an extra few unpaid hours in uniform (new or not). That's how to keep people around.
It's funny how turnover, while admittedly not at the levels of private security firms, is a thorn in the side of the TSA. Supposedly, those "high salaries" were to retain people. The cost of living and the amount of BS in the TSA obviously were not accounted for.
That sound you hear in the background is another $100 million of our money being flushed down the toilet.