NIST is proud to announce the release of NISTIR 8135, Identifying and Categorizing Data Types for Public Safety Mobile Applications: Workshop Report. This report summarizes the findings of a workshop held by the Association of Public-Safety Communications (APCO), in cooperation with FirstNet and the Department of Commerce held on June 2nd 2015. The workshop's goal was to identify different types of data that will be used by mobile applications on the nation's first National Public Safety Broadband Network. Approximately 50 participants, hailing from fire and emergency medical services (EMS), law enforcement, the telecom industry, federal and local government, and academia provided input to the workshop