I saw in another thread, saying that
initial interview = the formal interview with officer.
second interview = oath ceremony. Before taking oath ceremony, you need to answer the questions in a sheet. It's not a formal interview, just turn in your answers.
I am wondering what these questions look like. I'm going to take a trip after my initial interview, will it affect me? Does anyone have the completed list of the questions in second interview?
The oath letter has several questions including any travel you had done between interview and oath:
http://www.ilw.com/forms/N445.pdf