Took weeks to get a phone call after applying to the position. Went onsite for the interview. I was asked a few technical questions and some behavioral ones as well.
It was an average/typical interview. There was not anything unexpected. The whole interview process did take awhile. You just have to be prepared to hurry up and wait. I would imagine with any large company there is alot of dead time in between.
Basic interview process for an Engineering position, nothing out of the ordinary. However, the need to have a security clearance causes the hiring process to take months and months. Be prepared to wait for extended periods of time before the actual onboarding starts.