Lockheed Martin interview questions

I had a a phone interview, after I applied online several weeks prior. After the phone interview I was given a face to face interview. They paid for all travel expenses and I stayed in a hotel relatively close to the company site, the face to face interviews consisted of 3 interviews with different hiring managers.

I got a referral from a friend currently working for the company and got a call a little over a week later. After that initial communication I was invited to a meet and greet at a local hotel with an all day interview session the next day. Had several interviews with different engineers throughout the day, and they were very accommodating. I called later on and emailed but never received a response.