Pros
The benefits package is comparable or better than those offered at companies nowadays. Who offers a pension anymore? They do! They care about their employees and try to grow them from within. They offer many opportunities for growth, if you take them. The work schedule is very flexible. The type of work can be interesting if you find the right projects. There is very little overtime.
Cons
People need to be a little more motivated to try new things at BAE Systems. They are pretty much set on the technologies they know and love, but are resistant to try newer things. Some of the engineers could use some supplemental training on new technologies (which the company offers). The management (especially newly recruited or promoted) need better training on how to be an effective manager.