Had a 20 minute phone interview, just went over my resume. The next week I had a job offer. It is probably important to note that I had interviewed for a similar job at Lockheed a few months before so that may have simplified the process. For that job interview I met with three separate hiring managers in person. I was actually given a verbal offer which was then put on hold and never came of anything.

Straightforward, focus on STAR method, tie that back to your resume. They use Full Spectrum Leadership principles that LM has set, so look into that as well. Make sure to have good examples that show both technical, managerial, and interpersonal skills.