Lockheed Martin interview questions

Applied for a position and got an email from a recruiter saying the position was already filled. One month later I received an email from the same recruiter saying the applicant had dropped out and that my resume was on their review list. I got a call from the manager to come in for an interview the next day. Interview involved the manager and 3 other employees. Interview was a lot of technical questions with the remainder of the meeting being a discussion about the company, very relaxed toward the end. Received an offer letter by email 3 days later.