There have been a lot of threads devoted to the military conversion issues in logbooks. Many different ways to skin that cat.
As to your specific question, I personally wouldn't add any time, but I would keep count of the sorties. If your interviewer wants to add time he can use that number and multiply by .3 (or whatever). Others may disagree with my method.
Search the thread history, you'll find a lot of good info.
WW