I applied online. The process took 12 months. I interviewed at Northrop Grumman (Palmdale, CA) in Mar 2014
Interview
Interview was with two managers from partnering departments. Was for classified program so questions were general. Was mostly shooting the breeze about a number of non-work related issues to see how you carried yourself. Wear a suit or Business Attire; dress like you want the job.
Interview questions [1]
Question 1
Questions were all very general. Best to relax and be yourself.