by the way - You can use Global Entry ID# for precheck during domestic travel. My precheck was expiring and I had called specifically for a question. Their support person told me that since I recently signed up for global entry, I didn't need to get precheck. So even if you don't travel internationally often, but might - then its worth it to get Global entry. Of course if you don't plan on ever travelling outside of the U.S ,then yeah no reason to get it.