Decent if you're ok with corporate culture - Systems Engineer bei Lockheed Martin: Mitarbeiterbewertung

Can take a while to get spun-up on a new program. Being a huge corporation means some thing slip through the cracks and the focus isn't always on individual employees (sink or swim mentality - you have to reach out and grab your own opportunities a lot of the time). Promotions can be a little subjective (they rely mostly on who your manager is and how many years you've been with the company, not necessarily just performance).