Newbie here and hopefully new to up as of tomorrow

I am going to a hiring session tomorrow morning for a train crew member in Ogden, Utah.
Hope y'all might answer a couple questions.
I been told not to worry about a resume.
What can I expect to be asked in the interview?
Any key answers or words I can/should use?
I'm leaving a 21 year career as a union pipe fitter to follow my dream job of trains so I really wanna nail this.
Thanks