They use an outside company Hireright for the initial background check, this process is a little lengthy and confusing, some info and apps are submitted to your HR contact while some go to Hireright. Theinterview itself included a brief company overview, then I met with several different potential section managers who later did a selection process of which interns they each wanted. Only a very short offer acceptance window after the offer had been made, like a week or two at most.