In the seismological community, much effort has been directed recently toward developing a coordinated plan for rapid response to major earthquakes. This topic was the subject of a special interest group at the recent annual meeting of the Incorporated Research Institutions in Seismology (IRIS). Several new and some old ideas concerning a rapid array mobilization plan (RAMP) emerged. IRIS has agreed to set aside initial funding and equipment to deploy five seismic stations in support of approved RAMP initiatives. Although five stations are not sufficient to ensure a successful aftershock deployment, the present high demand for IRIS portable equipment in planned experiments precludes reserving any additional instruments for aftershock studies.