If you or someone you know work for the TSA, please consider investing in a radiation badge or ring. As a scientist who has worked with radiation in the past, I can tell you that wearing a badge or ring is required by employers and regulatory agencies. The fact that TSA agents who operate X-ray scanners (for both luggage and people) day after day do not wear dosimeters is appalling. Make sure that you are not getting over-exposed. Here is one website I found with a google search for "dosimeter badge reading" that lists their prices, but there are numerous services available that do this. If you don't know where to go, ask your dentist or doctor which service they use (since they use medical x-rays, they'll have a contract with a regular dosimeter reading service).
H/T to Sally in the comments for suggesting this.