Teamwork and cohesiveness of a culture that promotes team spirit or "esprit de corps" makes for an amazing sense of belonging in any activity performed. The intense need for strong leadership is definitely a significant character in this organization. If your skills are weak in that department, believe me, it will be very well improved in a very short period.
However, the advancement of a technically educated personnel could be noticeably slower than that of many of that in the private/non-governmental sector. To get to the edge of technology, engineering and state-of-the-art equipment, it would better to be on the contracted end.
Leadership skills, Team Spirit, benifits, job security.
Slow enhancement, high risk and heavy danger, below average compensation.