This interim final rule implements that section of the recently enacted Veterans Benefits Act of 2003 (VBA), which addresses procurement programs for small business concerns (SBCs) owned and controlled by service-disabled veterans. According to the interim final rule, a contracting officer may restrict competition for a requirement to service-disabled veteran-owned (SDVO) SBCs. The interim final rule defines the term service-disabled veterans, explains when competition may be restricted to SDVO SBCs, and establishes procedures for protesting the status of an SDVO SBC.