The NIH Office of Research Services (ORS) requires a short-term bridge task order against GSA MAS 54151HACS SB through Contract # GS-35F-003CA to ensure continuity of critical services. The task order will have a base of only three months, to cover the minimum period reasonably necessary to ensure that a competitive solicitation can be developed and issued. Three additional one-month option periods will be included as a contingency for unanticipated delays in the competitive award process. This acqusition is conducted under the authority of the GSA Multiple-Award Schedule (GSA MAS) program. Consideration of schedule contractors will be restricted in accordance with: GSAM/R 538.7104-3(b)(1)(i)- The need is of such unusual urgency that following the procedures would result in unacceptable delays in fulfilling that need.