We do not, so I tried to track it down.
After a series of phone calls, I finally talked to someone called Walter in the Town's Emergency Management office. Walter told me that, yes, such a plan does exist in print. It's about 200 pages long, and there are only five copies of it - only the heads of the emergency responder departments in town have copies.
Even though it is a Town document, and therefore available to the public, the library will not be getting one. Walter feels that there is too much confidential information contained in it (by which, I thought he meant procedures and practices that we wouldn't want terrorists to see, but he was actually more concerned with protecting the home and cell phone numbers of the Town's emergency responders).
However, if anyone does want to see the plan, they can call the Emergency Management office (978-250-5280) and leave a message for Walter (he's a volunteer, and so doesn't keep a regular schedule) to make an appointment to go down to the office and see the plan.
To answer this question, I used the phone book to find local phone numbers. After the fact, though, I wondered how far I could get only searching the internet. The answer is, not very far - I could find the town website, but it was a struggle to actually find the (not at all helpful) Emergency Management Agency page within the town website. I had to use Massachusetts' official website to find Walter's contact information. Here are a few other resources I found that might help if you're looking for similar information:
- Massachusetts Emergency Management Agency
- U.S. Department of Homeland Security (DHS)
- DHS's "Ready America" website
- State Homeland Security Contacts (from DHS)
- State Offices of Homeland Security (from National Conference of State Legislatures)
- American Red Cross' Disaster Preparedness Information
From the state-level websites, you should be able to drill down to find your local information. But, as I found, a call to your town/city hall or police department might be the best place to start. Being prepared does not require living in fear.