Sorry i was not clear. i applied online a few weeks earlier and assumed that was just to schedule an appointment. The i had my interview on Thursday April 9th and by Saturday afternoon i already had a ktn. The question is, If i got a ktn does that mean i was approved in two days time and can start using the TSA pre check line? I am really not familiar with the program other then seeing other travelers getting on that line and flying thru TSA.