Lockheed Martin System Engineer interview questions

STAR questions and super nice interviewer. They asked me about my biggest mistake, experience working with a team, and biggest challenges. Then we walked through my experience pertaining the position.

Began with an email from the recruiter with a pre-interview questionnaire. About two weeks later, I received an email from the scheduling bot to schedule a Teams interview. The interview was with the hiring manager, and was very casual, no behavioral questions and hardly any technical questions, mainly just talking about resume and interests. Finally, I received the offer one month after the interview.