Vantaggi
It's a large company, which by definition, creates a variety of possible work experiences. For writers who are not strictly IT, there are still many opportunities. Although the vaunted Boeing culture has changed a great deal since Boeing and McDonald Douglas merged in the late 1990s (and the company is less generous, more bureacratic, and less open) Boeing still provides relatively generous benefits (thanks largely to the unions that operate). Payscales have fallen behind the cost of living in Seattle area but is not terribly out of line.
Svantaggi
For writers in Company Communicatons (part of Shared Services Group) there is ever-increasing pressure to be fully billable -- at levels that are impossible to sustain. The company has always been plagued by bureacracy, but that problem has grown considerably worse in past 5 years. Management - particularly upper management - creates countless hoops and reporting requirements for first-line managers and their employees. The flow of information - while copious - leaves much to be desired.