Just got back from taking Mrs. K to her GE interview. It was really slow...like in nobody else there.....so the agent sat and chatted with us for a bit. In my wife's case she has a KTN through her DoD employment so I asked which KTN would be better to use. The agent said in terms of PreCheck it makes no difference but GE is tied to the GE KTN not the PreCheck KTN so if you're going to use GE for it's intended purpose then use the GE KTN. Mrs. K is going to change over to her new GE generated KTN.