Round table teams asking technical, experience, and psychological questions. They go from a script of questions but do not have to stick to the script. Usually the hiring manager and HR person take notes. They often have the multiple candidates in the building at the same time. They do not try to avoid exposing the candidates to each other. Also, they do not give tours of the facilities. They claim that Bob Gore once took a tour of a competitor and just by observation he was able to deduce important competitive information. Visitors are not allowed beyond the front lobby. Also they make you sign a very restrictive CDA AFTER you arrive on site. The do not tell this to you upfront. If you leave they must approve of your employers for the next two years.