Working away from home/out of state write offs.

I live in Alaska and worked in Reno for six months as an electrician, not contracting, I collect a W-2.  It was temporary work, verifiable by a travel letter and end date.    During the time I lived in Reno, renting/sharing an apartment and flying back and forth, what expenses can be written off?  Rent, utilities, meals/per-diem, flight cost? 

Also purchased a vehicle while I was down there, not sure if any write offs counted towards that.