I worked as a contractor developing a system at FDA. It lasted for 5 years. Inside the Beltway, it's pretty much the same all over. Dysfunctional communications and ridiculous breakdown of authority not corresponding to lines of management. No accountability. Project management requirements that have never been followed by any project. No commitment to the output of requirements gathering. No requirements change control. No performance engineering. Inadequate testing. No acceptance process by the government. IT groups with oversight for contractor output that have never written a line of code. All in all, pretty sick and ugly.
Prior to my project there were 5 failed attempts. My project followed PMI practices, worked them hard and succeeded.