The sniper investigation involved many local, State, and Federal agencies operating across jurisdictions in which the killings occurred in an effort to collect evidence at each crime scene and analyze it quickly while simultaneously mounting and coordinating efforts to capture the killers. During this 23-day period that involved 14 shootings and 10 deaths, it was also necessary to structure and coordinate communications with a fearful public and the snipers. This guide recommends ways to address both technical and practical problems in such a comprehensive and multifaceted law enforcement operation. The tasks and operations discussed include the coordination of investigative resources, facilitating communication within and among agencies, accessing Federal law enforcement resources, releasing information to the community and the media, and turning raw data into useful intelligence. The themes that emerged from interviews with those closest to the investigation were structuring an orderly response to ongoing random criminal events, communication among the players, balancing demands, recognizing the importance of intangible variables in establishing trust among the players and with the public, preparation, and role definition. 7 references and 13 appendixes that address this study's methodology and features of the operations in the various jurisdictions involved in investigating the killings