The USDB is a lot more orderly and well-regulated than Fed prisons, after all they tend to start with a much higher class of people...everyone in their had a clean enough slate to enlist in the first place, and most of them are in for crimes that are more situational than career criminal kind of things, so the prison population is fundamentally different than in the Fed system.
My big take-away from Manning's defense:
Transsexual dude claims his transsexuality is a mental disease.