They do not do career fairs that I am aware of. They hire from within mostly unless it's a position that is higher up, they may look outside of the current employees. normally the positions are hired from word of mouth. If you do by chance have them at a career fair, be honest in what you want in the end of your experience with CHR, where you want to be in 5 years, what you want to get out of it all, and be sure to talk with them about what your career trajectory will look like. be yourself.