I applied online. The process took 1 day. I interviewed at Lockheed Martin (King of Prussia, PA) in Dec 2010
Interview
For a summer internship, I had about 3 or 4 45 minute interviews with various hiring managers. They go over your resume, and ask you behavioral questions using the STAR method, such as "Describe a time when you worked as a team". It's not very hard at all, just prepare several examples beforehand.
Interview questions [1]
Question 1
Describe a time when you had to deal with a difficult team member.
They just asked me a few behavoiral questions and then I had to tell them about my background. It took about an hour and it was pretty straight forward and easy.
Interview questions [1]
Question 1
Tell me a time that you had a problem with a team member and how did you resolve it.
I applied through college or university. The process took 1 day. I interviewed at Lockheed Martin
Interview
LM found me through my alumni office. First interview was on campus with a group of other potential hires. They took us through the company overview, then we broke out into interviews with hiring managers.