Sergeant Rachael Mead: A Peek Into the Challenging World of A School Resource Officer Thu, 05/03/2018 - 12:19pm Heraldgroton Groton-Dunstable School Resource Officer, Sergeant Rachael Mead of the Groton Police Department. Full text available to online subscribers only. If you are a current online subscriber, please click here to login. If you are not a current online subscriber, please click here to view our subscription options. Thank you.