Staying with a student host is invaluable. They can give you a great perspective on military medicine. SDN interview feedback as well as the USUHS catalog.
What was the most difficult question?
There really wasn't one... I was very suprised not to get something. Both were very casual conversations.
Wonderfully supportive environment. Fairly casual nature of the school (in light of it being military). Open-door policy.
What impressed you negatively?
Housing is pretty expensive, especially if you want to live near the school. The school itself though gave me no complaints.
What did you wish you had known ahead of time?
Traffic is crazy around D.C. This didn't come up during the day for me, but don't tell the interviewer that you want to enter military medicine because you don't like HMO's... the military has one of the largest HMO's in the country.