Pros
It adds experience if you last long enough. I find that many of regular employees are nice to work with.
Cons
If you receive a call from Delta-T, run like hell. Definitely do not leave a job to go there. I agree with the above commenter that it is a very toxic environment. They have very unrealistic expectations and really do not give people a chance. They will terminate you in the blink of an eye. There have been several employees who have walk out with no notice. I understand why. In addition, the benefits are terrible. You cannot take vacation time for 6 months. You get less than 2 weeks vacation per year and only 6 sick days. If you have any type of chronic health conditions or need to see a doctor regularly, forget it. The medical deductible is ridicuously high. I would only recommend Delta-T if you are down and completely desperate. Otherwise, run.