EMSI provided exercise support to SONS 2010. The SONS 2010 Exercise play occurred 24-25 March 2010. This exercise was based on a scenario in New England to exercise the updated draft Coast Guard SONS Response Management Policy, the NCP, Regional Contingency Plan (RCP), applicable Area Contingency Plans (ACPs), and other stakeholder plans. This full-scale exercise served to integrate and assess response to a SONS on the local, State, and Federal levels. The exercise began on the third day of the response with the last two days simulated.