UVA. NM and AF right in a row in 2015. SDSU. It's definitely not many, but they're not unbeatable at home. And it's not like they really play anyone at home either. Being the top dog in the WAC all those years and then right into the WAC 2.0 makes it much easier.
I think they've played one really good team at home in the last two decades, TCU, and lost.