All you got to do is know your basic. Answer the questions using the star methodology. Give clear examples and be confident. Know your engineers basics. Talk about 3 experiences with various outcome. The obstacle that you face and what did you do to circumvent them.

Received a call from a recruiter for Lockheed about a based a skill set in my resume. When she I told her my skill set wasn't at the level she was seeking she looked over other Job Reqs and saw that there was another that I could fill. She called the hiring manger who called me. He looked over my resume and basically described what my statement of work would be and if I was interested.