Ventajas
If you want a very stable job this is a place for you. Very impressed with the level of diversity there. People are down to earth and not pretentious. Having impressive degrees from ivy league schools won't get you anywhere here. If you work hard and know how to present yourself well and align your goals with mission of the company you will do well.
Desventajas
They put you in a skill pool early on and determine what your maximum potential will be. Need to be savvy to move outside of those structures, but it is possible if you know the right people and can put in the effort. It runs like the government, so change is slow, and moving things along safely is biggest priority. If you are ambitious and interested in a fast paced environment this might not be for you.