Now a fairly long-time establsihed firm, as a start-up Systems Definition, Inc. (SDI) was primarily providing advacnced computeing and communication projects for DOD. The firm is now structured around providing innovative, use specific software development, system planning, technical documentation, and other relavent services to the First Responder community as well as to various DoD commponents and commercial clients. SDI personnel work alongside DoD clients to develop a wide range of system and software capabilities for many large-scale space and maritime projects. SDI also develops high-utility software applications for the First Responder community, providing innovative solutions that address unique accountability and safety objectives. The firm achieved a significant milestone with the operational deployment of the Electronic BF-4 web application to New York Citys FDNY. With the application deployed city-wide andused by FDNY Chiefs and Officers for each of the two defined tours (9X and 6X) to schedule personnel and provide reporting of personnel assigned to each tour, this capability replaces paper-based forms and provides easy-to-use functions accessible on the FDNY intranet.