One of the many, many things wrong with the way TSA was formed was that the employees were not allowed to form a union. Another egregious wrong was that they were not ever to be civil service employees, but instead yet another privatized for-profit enterprise paid for by you and me.
Thus was created a lowest common denominator workforce thrown into the fray with inadequate training, insufficient worker protections (I know I am uneasy about getting close to their x-ray machines, but they stand next to them all day long, day after day, and I doubt they are adequately protected), and initially at least a staggering turnover.
These workers are our fellow citizens and neighbors, and whatever my feelings about the TSA at least I know where to lay most of the blame. Being able to form a union is a giant step in the right direction.