Pros
You'll come for the mission, you'll leave or get suddenly terminated for trying to do the right thing.
Cons
The financial officers closed ranks around an employee who brought to their attention almost $100,000 of waste. After her sudden termination on a Friday afternoon, the remaining accounting staff was subjected to a mandatory meeting, in which the CEO, CFO, and 2 executive VPs made several contrived and libelous accusations. This effectively delivered the message that any employee who discovers mismanagement had better keep it to themselves, or be subject to the most unprofessional display of self-righteous character assassination imaginable. These hoods employee a media machine along with a fleet of lawyers (the CEO is a lawyer) to ensure the donor dollars don't stop. Meanwhile, their programs consist mostly of a mix of existing government assistance and highly visible and well advertised social events. No vets before 911 are given any assistance - their care would be prohibitively expensive. As the years roll on, the execs will exit with salaries and compensation well in excess of 7 figures. Every decision supports keeping employee cost down (most jobs would be hourly with overtime anywhere else, and you will work 60 to 80 hours a week) and keeping board and thus donor perception up (ask the accountant ants about reallocaton.) Unless you will be an EVP, keep looking.