From the Executive Summary: "On October 18, 2016, the National Urban Security Technology Laboratory (NUSTL) conducted an experiment on two communications systems--Mutualink and datacasting--to address requirements defined in Section 212 of Public Law 114-120 2015 (U.S. Congress, 2015). This law stipulates the execution of a pilot of three or more DHS components to assess the effectiveness of commercially available systems certified by the U.S. Department of Defense Joint Interoperability Test Center. These systems should allow multiagency collaboration and interoperability, and wide-area, secure, and peer-invitation-and-acceptance-based multimedia communications. [...] The experiment in Boston, Massachusetts, focused on the movement of voice, video and data information among the participants by integrating Mutualink and datacasting networks into existing communication systems. The two communication systems provided interoperability and enhanced communication capabilities during a realistic operational response scenario in which the U.S. Coast Guard (USCG) was activated to interdict a vessel four nautical miles offshore that was suspected of importing illicit materials. Voice communication integration and interoperability were accomplished utilizing Mutualink. Data (text, file sharing and video) interoperability was accomplished using datacasting. Video feeds from devices at the incident scene were shared over both the Mutualink and datacasting networks. The information was available to several command centers in the Boston region, including the USCG, Boston Police Department, Federal Emergency Management Agency (Region I), Massachusetts Emergency Management Agency and U.S. Customs and Border Protection."
U.S. Department of Homeland Security: https://www.dhs.gov/