Lockheed Martin Engineering Summer Intern interview questions

After the initial application, there are no tests or anything like that. I got a phone call for an interview in January sometime for an interview in February. There are 12 applicants for 3 places. 6 get interviewed in the morning, and 6 in the afternoon. Along with the interviews is the group task which is to solve a problem based on different information given to different candidates. Communication is key here. Note: Their HR department is not the best. Travel costs didn't get refunded to me unfortunately, and I received no communication after my interview, so I had to follow up.