This document is a memorandum from the Minnesota State Fire Marshal outlining changes to the state's fire code regarding sprinkler requirements. The memo highlights the sprinkler protection requirements for various building types, including residential dwellings, hotels, apartment buildings, schools, and storage facilities. It provides rationale for the changes and addresses exceptions for specific scenarios. The memo also emphasizes the importance of annual fire pump tests and the requirement for sprinkler tamper alarms on systems with more than six sprinklers.