I already interviewed there. Also, I grew up close to that area so I'll give you a suggestion. Since South Jordan (where the USN Utah campus is located) is a suburb of Salt Lake City and is about twenty minutes or more south of downtown Salt Lake and the Salt Lake Airport and since there is not a light rail train (TRAX) that goes that far south I'd rule out the train option. Book a room in one of the hotels close to the school. When you arrive at the SLC airport you could take a taxi or airport/hotel shuttle from the airport to your hotel and then from there have your hotel shuttle you to the school and back.
Here are some hotels very close to the USN South Jordan Utah campus where that option would work well:
-Country Inns & Suites by Carlson: Country Inn & Suites by Carlson-Salt Lake Cit
www.countryinns.com
10499 S South Jordan Gtwy - (801) 553-1151
- Sleep Inn of South Jordan
www.sleepinn.com
10676 S. 300 W. - (801) 572-2020
-Hampton Inn
www.hamptoninn.com
10690 South Holiday Park Drive, Sandy, 84070 - (801) 571-0800