Science and engineering communities are using high-performance networking for interactive collaboration; distributed data storage and data mining; large-scale, multi-site computation; real-time access to remote resources; dynamic data visualization; and shared virtual reality. With the CERN Large Hadron Collider (LHC) becoming operational in 2008, Internet2 worked throughout 2007 with the international high-energy and nuclear physics community to help ensure that participating U.S. universities and national laboratories will be able to effectively collaborate on this important effort. The LHC will generate petabytes of new data, and individual scientists will typically analyze terabyte-size data-sets to extract useful information from this archive. To help Internet2 member organizations understand the implications of these data requirements, the U.S. LHC community and Internet2 jointly organized a series of regional workshops for scientists in the physics community and the campus, regional, and national network professionals that support them. These workshops provided the opportunity for participants to develop detailed plans for dealing with this new source of science data and helped inform decisions about infrastructure changes, middleware requirements, and services needed by the research community. In 2007, these Internet2 workshops were hosted by Texas A&M University, Vanderbilt University, the University of Michigan, Princeton, and the University of California, Davis.