I think you are missing a bit of the point people are trying to make. Negotiating pay raises, increased vacation, additional compensation are all part of the renewal of the CBA. Changing the culture of the company and the environment in which you work is a completely different animal. I get that you are frustrated by lack of response to issues, your superiors, etc. But that has nothing to do with the compensation part of the CBA. I know nothing about DynCorp, so I have no opinion of them either way. Really and truly, you are not going to affect the culture of a company. Your only choice is to find a new job. I am not saying that flippantly.
In regards to the CBA, you are unfortunate that it is being renegotiated in a really down economy. Companies cannot afford to pay greatly increased salaries or additional benefits. Additional days of vacation means they have to pay you, but they don't receive any pay from the customer. Just not going to happen right now. It's not just DynCorp... it's all over right now. In Calvert County, the county pretty much voided the last year of their existing contract and teachers had a raise that was in their existing contract greatly reduced. At least they are honoring what is currently in yours. And the first response you received did have a valid point. Many employers are now calling any time off you receive "Paid Time Off" or PTO. It doesn't matter what you use it for; if you need a day off, you use PTO. Think of it this way: instead of receiving 10 vacation days & 4 sick days (which you may not need), you get 14 days of flexible PTO that you can use for whatever you want.
Obviously you did not get the response you were hoping for when you posted here. It is hard to garner a lot of sympathy when there are many people who have family members laid off right now, or possibly are still trying to recover from a recent layoff. Hopefully you can use the energy you have for this and put it into additional training, experience, etc and begin looking elsewhere. It may take awhile, but remember the grass is not always greener on the other side.