If they're coming to a job fair, they can't just show up. They need to have some counselling and coaching, and they have to be clear about what their focus is. I think we had conversations over here about the notion of transferrable skills. They have to be clear about what they want. They have to be able to market themselves accordingly.
A counsellor will help them determine what their goal is in the job market and then build a plan to get there. That also includes building a strategy for marketing themselves effectively. Part of that strategy is developing a résumé. The résumé has to be clear about who they are, what their accomplishments and successes have been, their strengths, and how they relate to the employer they're thinking about. We would never coach someone to go to any career fair; it would only be a job fair that was relevant to them.
If they had an electrical trade in the military and they want to continue using those electrical skills on the outside, they should be attending job fairs where there are manufacturing, electrical trade types of opportunities, and meet employers who reflect their particular goals.