Think about what this job entails...

Constant standing for hours while engaging with travelers who basically consider you the obstacle to making their flight...soon you develop an attitude that a lot of people are idiots because they don't follow the "rules" that you are taught are keeping Amerika safe...that attitude soon changes to contempt for the traveling public in general...you become a hardened, bored, drone that is constantly being pressured to find "something", so you toss common sense and find inane objects "dangerous"...you make the elderly, children, and the infirm obey your slightest commands and become perturbed that they fail to respond in the manner you demand...you develop hypertension and a permanent angry attitude that you then take home with you...soon you are beating your kids....life becomes hell...a deep.depression develops...you buy a gun...you contemplate quitting and getting a postal job....

So, you might as well go get a job at the post office now and save yourself all this trouble.