To Whom It May Concern: Pursuant to the Massachusetts Public Records Law, I hereby request the following records: All policies/procedures/general orders concerning unit call sign structure. This would include information about the length of call signs and what the digits correspond to. For example Boston Police Rule 324A denotes unit location, unit type, identifying number and shift in their call signs. I would also accept the General Order concerning radio communication procedures in this information is covered in that document. I also request that, if appropriate, fees be waived as we believe this request is in the public interest, as suggested but not stipulated by the recommendations of the Massachusetts Supervisor of Public Records. The requested documents will be made available to the general public free of charge as part of the public information service at MuckRock.com, processed by a representative of the news media/press and is made in the process of news gathering and not for commercial usage. I expect the request to be filled in an accessible format, including for screen readers, which provide text-to-speech for persons unable to read print. Files that are not accessible to screen readers include, for example, .pdf image files as well as physical documents. In the event that there are fees, I would be grateful if you would inform me of the total charges in advance of fulfilling my request. I would prefer the request filled electronically, by e-mail attachment if available or CD-ROM if not. Thank you in advance for your anticipated cooperation in this matter. I look forward to receiving your response to this request within 10 business days, as the statute requires. Sincerely, Ethan Hansen