Pros
There are some people that work there that try to live and work "the SEI way". Being away from the office, taking care of customer issues. In most cases, they do whatever it takes to resolve customer issues as quickly as possible above and beyond the contractual response requirements. Most customers see and appreciate that effort.
Cons
The "SEI way" is a fiction of the imagination of the leadership team and all of the employees know it. Failing to toe the company line about the "SEI way" is the fastest way to unemployment. The employees who fell for "the line" try their best to look out for each other, the others espouse the mantra when senior leadership is around and can't stand each other (in most cases) the rest of the time. We had a large office, the most knowledgeable engineer in the office did zero training with anyone else. We received the most training when we had another manager in covering our office for a couple days. I was an "excellent" employee until I said something that made someone in management unhappy. I had been told that the "SEI way" was to work with "problem employees" to help improve them. Immediate termination coming only for the worst offenses. I came in to work one day and found out I was no longer employed and for a totally different reason. The management person in question couldn't list the actual reason. It may have changed since I was there but I did not find this to be the case in any office I visited during my time with the company.