Hi, Nanci and welcome!
Do you mean are you a member of any of the the special programs offered by the TSA, like Precheck, Global Entry (GOES), TWIC, to help make going through the security screening lanes, easier/faster?
If you had applied for any of these programs online and/or at a local enrollment center and were approved, the answer would be 'yes' you are a member of that particular program, or more than one program. If you did not apply, but have been getting the privilege of having "TSA Precheck", for example, printed on your ticket or boarding pass, you might have been in a program that allows fliers to enjoy these privileges without actually being enrolled, and then they can apply on their own, for one or more programs.
If you would like to know if you are a member of, for example, TSA Precheck, you would visit the website below and fill out the form provided or call the phone number listed, and you will be told if you have a KTN (Known Traveler Number):
You can also call Universal Enrollment Services at:
I hope this helps!
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