Members will receive a letter when their KTN is about to expire, but you can also submit a Service Status form online. Global Entry is designed to provide expedited reentry into the United States ...

A KTN is a code given to trusted travelers who enroll in programs such as TSA PreCheck or Global Entry. Enrollment involves online applications, in-person interviews, and paying the application fee.

Generally, this means adding in your nine-digit KTN into your flight information ... so there are no international airport locations. Global Entry is a membership program run by U.S. Customs ...