Over the past several decades, the workforce delivering federal government services has changed dramatically. While government spending has increased, so has the use of non-federal resources to achieve mission results. Federal government organizations increasingly have engaged contractor, grantee, volunteer, state and local government, or other service delivery teams to get the job donecreating what some have called a multi-sector workforce. Inherent in this approach to service delivery are issues related to performance accountability, acceptable risk, and accurate cost comparisons of alternatives.