Pros
Catapult will provide you the tools you need to be successful in your career, you just need to use them. If you are a good employee and have proven yourself, they bend over backwards to ensure that you remain one of their employees, even if they have to move you to another contract if the contract you are currently on is going to expire and not be renewed.
Cons
Contract work is difficult and unfortunately when you are placed in a work area sometimes it is difficult to move up; you may get added responsibilities, however, unlike working in a corporate environment, it can sometimes be hard to progress, regardless of continuing education.