From the Executive Summary: "The purpose of this exercise was to assess the capability of the Willimantic Fire Department, Windham Emergency Management, and Community Volunteers to respond to a radiological incident involving the Millstone Power Station. The exercise was held in accordance with FEMA's policies and guidance concerning the exercise of state and local Radiological Emergency Response Plans (RERP) and procedures. [...] The Windham Host Community, Emergency Management Response Organizations, Fire Department Personnel, and Volunteers successfully demonstrated their knowledge of their emergency response plans and procedure and adequately implemented them. There were no Level I Findings as a result of this exercise. There was one Level 2 Finding that was successfully re-demonstrated on the spot and closed. There are no open Level Findings as a result of this exercise."
U.S. Nuclear Regulatory Commission: https://www.nrc.gov/
Millstone Power Station Exercise. Windham High School, Willimantic, Connecticut. June 17, 2017