In summary, the MREP provides the following capabilities to the MIDAS: first, a process for responding to an emergency event. Characteristics of MIDAS models across all modeling groups can be quickly identified and linked to relevant documentation. Second, a quality assurance mechanism for registering models into the MREP. For a model to be part of the MREP, it must: 1) have a name; 2) be linked to a readily available description; 3) be linked to a contact; 4) identify the date and time of creation; and 5) specify the terms of distribution. The registration system is consistent with the process identified by Le Novère et al. [10] . Third, a tracking mechanism that catalogs, locates, and identifies the different versions of the models involved in different experiments that comprise MIDAS studies. Fourth, the MREP has productivity features that allow modelers to efficiently locate previous model versions and reuse the code in new models. Fifth, the MREP maintains inventories of work developed by the research groups in a locatable form.