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    <loc>https://www.systemsdefinition.com/contact-us</loc>
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    <lastmod>2025-07-07</lastmod>
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    <loc>https://www.systemsdefinition.com/home</loc>
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    <lastmod>2021-05-20</lastmod>
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      <image:title>Home - Fireground Accountability</image:title>
      <image:caption>The SDI suite of First Responder fireground accountability applications are derived from our efforts to develop high-value applications to meet Fire Department of New York City (FDNY) strategic objectives for firefighter accountability and safety.</image:caption>
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      <image:title>Home - Technical Services</image:title>
      <image:caption>SDI provides focused and efficient technical services and application software development to multiple federal agencies, municipal First Responder organizations, government contractors, and commercial clients.</image:caption>
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      <image:title>Home - About Systems Definition Inc.</image:title>
      <image:caption>Headquartered in Alexandria, VA, Systems Definition, Inc. (SDI) provides innovative, focused software development, system planning, technical documentation, and more to the First Responder community, as well as a variety of DoD and commercial clients. Our activities support initiatives for Defense, First Responder safety and accountability, aerospace, custom applications, and web technologies. We deliver a comprehensive suite of fireground accountability applications which are used daily by fire departments across the United States, including the New York City Fire Department.</image:caption>
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  <url>
    <loc>https://www.systemsdefinition.com/staff</loc>
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    <lastmod>2025-12-03</lastmod>
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      <image:title>Our Team - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
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  <url>
    <loc>https://www.systemsdefinition.com/about-us</loc>
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    <lastmod>2021-03-05</lastmod>
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      <image:title>About Us - About Us</image:title>
      <image:caption>SDI began operations in 2002, starting with a small group of personnel supporting advanced computing and communications projects for the Department of Defense (DoD). Today, SDI supports a variety of DoD, First Responder, and commercial clients with focused software development, system planning, technical documentation, and innovative software applications. SDI works 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. SDI achieved a significant milestone with the operational deployment of the Electronic BF-4 web application to New York City’s FDNY. This application is deployed city-wide and is used 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.</image:caption>
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  <url>
    <loc>https://www.systemsdefinition.com/advisory-board</loc>
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    <lastmod>2022-09-06</lastmod>
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  <url>
    <loc>https://www.systemsdefinition.com/in-the-news</loc>
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    <priority>0.75</priority>
    <lastmod>2022-05-11</lastmod>
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  <url>
    <loc>https://www.systemsdefinition.com/videos</loc>
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    <priority>0.75</priority>
    <lastmod>2024-01-11</lastmod>
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  <url>
    <loc>https://www.systemsdefinition.com/technical-services</loc>
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    <lastmod>2021-06-04</lastmod>
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      <image:title>Technical Services</image:title>
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      <image:title>Technical Services</image:title>
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      <image:title>Technical Services</image:title>
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  <url>
    <loc>https://www.systemsdefinition.com/overview</loc>
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    <priority>0.75</priority>
    <lastmod>2024-01-12</lastmod>
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      <image:loc>https://images.squarespace-cdn.com/content/v1/602c25f4429a247c66ca0f79/1618420496613-L0K3FCL2Z3344EFO3GMY/unsplash-image-newCTAG6kPE.jpg</image:loc>
      <image:title>Overview - EasyStaff®</image:title>
      <image:caption>EasyStaff® software provides an easy-to-use interface refined for real-world usability. With features derived from our experience building accountability applications for the New York City Fire Department (FDNY), our software allows Fire Department Chiefs and Officers to quickly and easily fill out tour rosters, ensuring accurate firefighter staffing data to support safety and accountability efforts. These applications have a proven track record, and currently support one of the largest fire departments in the world, among many others across the United States, with high-value user capabilities.</image:caption>
    </image:image>
    <image:image>
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      <image:title>Overview - Custom Solutions</image:title>
      <image:caption>Our custom solutions are developed to meet your Department’s needs and operations. We are committed to working with your Department every step of the way to deliver a purpose-built solution. Our deliverables prevent vendor lock-in and enable Departments to maintain and upgrade applications as their needs, and technology, evolve. See how our custom applications can work for you.</image:caption>
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      <image:title>Overview - APX Personnel Accountability Application (APAA)</image:title>
      <image:caption>Our fireground accountability software uses fireground handie-talkie radio traffic integrated with department personnel data to rapidly process and display critical personnel accountability information for use by incident commanders. For the Motorola Solutions line of APX™ radios, we built the APX™ Personnel Accountability Application (APAA) to take advantage of the advanced features in APX™ radios. The APAA software transforms fireground accountability, working seamlessly with APX™ radios over the same voice communications network that a department uses at an incident scene (single channel, fireground conventional).</image:caption>
    </image:image>
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      <image:title>Overview - Pricing</image:title>
      <image:caption>We understand that no two Fire Departments operate in the same manner and each Department possesses a unique combination of personnel and resources. We bundle our EasyStaff® software with our APAA accountability packages, which are tailored specifically to each Department’s needs. It all starts with filling out a short questionnaire that provides us with the key information we need to define a suitable solution to meet your unique fireground accountability needs. Once we have this information in hand, SDI will be able to determine appropriate pricing. Fill out our APAA Proposal Questionnaire and get started today!</image:caption>
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  <url>
    <loc>https://www.systemsdefinition.com/easystaff</loc>
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    <lastmod>2022-09-06</lastmod>
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      <image:title>EasyStaff</image:title>
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  <url>
    <loc>https://www.systemsdefinition.com/apaa</loc>
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    <lastmod>2024-01-15</lastmod>
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      <image:title>APX Personnel Accountability Application</image:title>
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  <url>
    <loc>https://www.systemsdefinition.com/news-archive</loc>
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    <lastmod>2021-06-16</lastmod>
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    <loc>https://www.systemsdefinition.com/careers</loc>
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    <lastmod>2021-05-25</lastmod>
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    <loc>https://www.systemsdefinition.com/ifsi-rit-training</loc>
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    <lastmod>2021-08-17</lastmod>
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      <image:title>Supporting First Responders: SDI Supplies APAA Software for the Illinois Fire Services Institute - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
    <image:image>
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      <image:title>Supporting First Responders: SDI Supplies APAA Software for the Illinois Fire Services Institute - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
    <image:image>
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      <image:title>Supporting First Responders: SDI Supplies APAA Software for the Illinois Fire Services Institute - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
    <image:image>
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      <image:title>Supporting First Responders: SDI Supplies APAA Software for the Illinois Fire Services Institute - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
    <image:image>
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      <image:title>Supporting First Responders: SDI Supplies APAA Software for the Illinois Fire Services Institute - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
    </image:image>
    <image:image>
      <image:loc>https://images.squarespace-cdn.com/content/v1/602c25f4429a247c66ca0f79/1629218554217-ORU4DQCSUWB32MGY0FP5/1.jpg</image:loc>
      <image:title>Supporting First Responders: SDI Supplies APAA Software for the Illinois Fire Services Institute - Make it stand out</image:title>
      <image:caption>Whatever it is, the way you tell your story online can make all the difference.</image:caption>
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