US Treasury Interest from 1099-INT in Box 1 or Box 3 or both?

Greetings.  I see a couple of answered questions on this subject, but they do not address this question.  My 1099-INT (from holding a US Treasury Bond) has a $$ in Box "Total Interest Paid or Credited".  Do I enter this amount  into both box 1 and 3, or just Box 3 (US Treasury Interest)?