The Department of Homeland Security and champions of interoperability nationwide fondly remember the life of Montgomery County (Maryland) Council member Marilyn J. Praisner, who passed away on February 1, 2008. Marilyn was recognized across the Nation for her extraordinary leadership on technology and communications issues. Marilyn brought invaluable expertise, insight, and a tireless work ethic to the SAFECOM Executive Committee (EC), which she chaired since its creation in 2003. Under her leadership, SAFECOM advanced interoperability progress for emergency responders across all levels of government. Prior to her service on the SAFECOM EC, Marilyn served as the Vice Chair of the National Task Force on Interoperability’s Governance Subcommittee. She also represented local government on the Public Safety Wireless Network program. Even the most impressive trail of awards and headlines may meet its match in trying to capture the remarkable legacy Marilyn has left us.