for the love of god, take the TSA job lol. The government is one of the best places you can work - the best benefits, pay progression and promotion over time based on your years of service if you are looking to eventually get promoted. USAjobs.gov is a site I check daily lol. I really wouldn't stay at Express unless you want to try and be an AM/PM handler who can just leave after the sort - but there's really not much reason to stay lol.
Make sure TSA in your area isn't farmed out. It is in a lot of states. Contractors.