Interview and related testing is a very thorough exercise, likely involving at least four different people and more than one visit to the Hines office. You will be asked about your prior experience and your education in great detail, including what you learned, how you interacted with all types of other people, the challenges you faced and how you met or overcame them.
You should know that your background information will be checked out very thoroughly too. People will be contacted and documentation will be obtained. You will probably be asked about things that were found in this checking during subsequent interviews.
Tests will be performed to determine your current skill levels in performing key tasks. Also a personality profile to determine that you are able to work effectively with others at Hines.