Pros
You have easy access to other opportunities within the company without management looking at you in a bad way. Boeing has the best health, dental, and vision benefits and most of their plans are free for you and your family. Boeing pays for any higher learning education even if it is not related to your career. As a Boeing employee you interact with lots of departments within the company and gives you a broad perspective of how a leading company works instead of being concentrated in one division; they offer different types of rotational programs for you to learn different departments. There is also a huge community composed of different cultures.
Cons
Even though you have the option of moving within the company, you have to stay in your position for one year before you can actually transfer. Since it is the Aerospace and Defense market, it is difficult to make changes and once changes are approved they take a lot of time and pacience to see the results. Also, you might encounter old "traditional" ways "to do things" and experience some resistance, but with the right way to present them there is no doubt changes could be made. Also some of the hours of work might be hard to adjust, like the 5:30 am to 2:00 pm. Waking up that early is hard to most people but leaving at 2 is nice since you have the afternoon to accomplish things.