One thing you should understand about the biggest Government IT contractors is that they put one of their few 'A' teams (really a 'B' team by big tech standards

One thing you should understand about the biggest Government IT contractors is that they put one of their few 'A' teams (really a 'B' team by big tech standards) on the project during the sales process, then swap out to one of their many 'D' teams after the win dinner. That's not just true for big government IT contractors, it's standard practice for any large contracting/consulting firm in the private sector too. The A team does the RFP response, the C or D team does the implementation so as to protect margins.