Https://answers.microsoft.com/en-us/officeinsider/forum/all/security-screening-how-to-find-tsa-precheck-number/b488ed07-b859-4a66-91bc-84845557023b https://answers.microsoft.com/en-us/officeinsider/forum/all/security-screening-how-to-find-tsa-precheck-number/b488ed07-b859-4a66-91bc-84845557023b