Remembering Everyone Deployed
Our office in Niceville, Florida is accessibly positioned near Eglin Air Force Base (AFB) to meet our customer’s needs. We have built an exceptional team to execute the programs we fulfill, with expertise in avionics, position, navigation, and timing (PNT) systems, and open systems architectures with an emphasis in the communication and navigation across weapons, aircraft, and other platforms.
The foundation for the work we do is service: serving the warfighter, serving Eglin AFB, and serving veterans and the growing STEM community in Niceville. On Fridays we wear red to Remember Everyone Deployed, and it’s an outward demonstration of the deep obligation we feel to provide the best capability to the warfighters so they can complete the mission and return home.
Integrated Solutions
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Market Research
Best of Breed
Integration
Government Owned
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Kill Chain Analysis
Open System Architectures
Software Defined Radio
Communications System Design
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Precise PNT
Alternate Navigation
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Model Based Systems Engineering (MBSE)
System Modeling Language (SysML)
Digital Engineering (DE)
Requirements Traceability
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Government Reference Architecture (GRA)
Weapon Open System Architecture (WOSA)
Sensor Open Systems Architecture (SOSA)
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Electronic Enclosures
Mechanical & Environmental Testing
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Resilient-Embedded GPS INS (R-EGI)
Common Modular Software-Defined Radio (cMSDR)
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Embedded Software
Software Integration
Containers
Agile Workflow
Our Work
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![An orange flight rack inside the cabin of an airplane behind the cockpit.]()
R-EGI
The Air Force Life Cycle Management Center (AFLCMC) at Robins AFB, GA awarded IS4S an Other Transaction Agreement through Consortium Management Group, Inc. (CMG) on behalf of Consortium for Command, Control and Communications in Cyberspace (C5) for the Resilient-Embedded Global Positioning System/Inertial Navigation System (R-EGI) development and prototype program.
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![A white cMSDR logo on a purple background with text: "cMSDR, communicare summus."]()
cMSDR
The Air Force Life Cycle Management Center (AFLCMC) at Eglin AFB, FL awarded IS4S the USAF common Modular Software-Defined Radio (cMSDR) contract to develop an open, modular communications datalink.
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![Three IS4S employees wearing red polos in an IS4S conference room, one man holding up a small silver cube.]()
Design Agent
We offer a novel and unique system design agent acquisition strategy where our team conducts market research through engagement with multiple industry teams, converges the best capabilities from each offering, and combines them into a government-owned technical data package.
IS4S can then manufacture the capability, or the government can select whichever company they deem best to do so.
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![Three small data monitors lined up on a shelf with non-specific data displayed on them.]()
Precise PNT
We are a leader in the development of systems that provide PNT capabilities.
We do this through open system modular digital architectures using the latest global navigation satellite system (GNSS) receivers and accurate inertial measurement units (IMUs) while leveraging alternate navigation solutions when GNSS capabilities are contested or denied.
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Kill Chain Analysis
We lead a modeling and simulation (M&S) effort to assess elements of the long range kill chain. We use Cameo as a user interface, Advanced Framework for Simulation, Integration, and Modeling (AFSIM) as a visualization tool, and plug-ins to connect Cameo and AFSIM or any other visualization tool.
These tools, used correctly, will inform the Department of Defense's acquisition arm as well as the warfighter on strengths, gaps, and shortfalls of capability development.
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![Over-the-should shot of a man holding a clear plastic cube with the IS4S logo on the side and that is apparently full of various hardware and wires.]()
Communication System Design
Our team leads the design and development of small multi-purpose communication systems, and we are an industry leader in sensor open systems architecture (SOSA) small form factor systems.
This strategic combination significantly contributes to the successful execution of programs like the common modular software-defined radio (cMSDR), which allows for the rapid employment and updating of various waveforms. These capabilities enable today's warfighters the agility to respond to battlespace communication needs.
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![Close-up shot of a computer screen showing a non-specific example of a systems engineering diagram.]()
Systems Engineering
We combine traditional systems engineering with cutting-edge digital engineering to drive innovation through model-based systems engineering (MBSE). Using Cameo Systems Modeler, we create digital twins of products, ensuring thorough requirements traceability and accountability. Throughout the design lifecycle, systems engineering is embedded to enhance programmatic and technical performance. Dynamic information is continuously tracked using system modeling language (SysML) software, enabling real-time optimization of complex systems. This approach streamlines development, improves efficiency, and fosters the delivery of high-quality, reliable products.
Niceville Leadership
L. Bruce Simpson, Ph.D.
Executive Vice President
Mikel Miller, Ph.D.
Senior Vice President
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Dr. Mikel Miller has served IS4S since 2017. He is an internationally recognized technical executive with over 40 years of experience in executing, researching, developing, testing, integrating, and implementing state-of-the-art position, navigation, and timing (PNT) hardware and software systems. He has led and worked closely with diverse groups of government, industry, international (including NATO and Pacific allies), and academic organizations. He is an expert in leading and managing complex interdisciplinary programs with highly skilled and talented people across multiple organizations.
Mike earned his B.S. in electrical and electronic engineering (EEE) from North Dakota State University followed by his M.S. and Ph.D. degrees from the Air Force Institute of Technology. He has published over 65 technical papers and documents, presented over 20 conference keynote speeches, served as an invited lecturer for over 25 short courses, and chaired five international symposiums on PNT capabilities that are enabled by advances in systems and sensors. All these significant contributions to PNT have been recognized by both national and international organizations leading to his selection as fellow of the Institute of Navigation (ION) and fellow of the Royal Institute of Navigation (RIN). He was also awarded the ION’s 2013 Weems Award and the 2021 prestigious National Defense Industrial Association (NDIA) Richard H. Johnson Technical Achievement Award (Johnson Trophy) recognizing his outstanding personal technical achievements resulting in significant contribution to precision strike systems.
Prior to joining IS4S, Mike served 34 years in the United States Air Force (USAF), 20 years as an active-duty officer and 14 years as a civil servant, where he set the foundation for significant improvements in PNT resilience and robustness. Mike’s service as the USAF’s chief scientist for the AF Research Laboratory’s Munitions Directorate and the senior scientist for all USAF PNT provided him extensive experience working within large, complex, and bureaucratic organizations to lead, develop, and transition complex technologies. This has given him a profound appreciation for agile team execution and instilled his intense commitment and passion for IS4S’s employee-ownership and control ideology.
Stacey Darhower
Vice President
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Stacey A. Darhower joined IS4S in 2023 with over 30 years of acquisition experience. For 27 of those years she worked as a USAF civil service contracting professional at Eglin AFB, serving as a contracting officer and in several senior level management positions.
Stacey has vast experience across operational, research & development, services, and weapon system acquisitions, including Joint Air-to-Surface Stand-Off Missile (JASSM), Joint Direct Attack Munition (JDAM), Miniature Air Launched Decoy (MALD), and Massive Ordnance Penetrator (MOP). This breadth of experience has established her as a leader in the use of innovative acquisition strategies; one of those successes being the establishment of AFWERX.
Her final assignment was serving as the director of contracting for the Air Force Test Center at Eglin AFB, leading a diverse workforce of 120 military members and civilians executing a portfolio of programs valued at $9B in support of base operations and programs for the 96th Test Wing, eight tenant wings, and 40+ other units across the Department of Defense. Her contributions, not only to the Air Force mission but to the local community, led to her induction into the Okaloosa County Women’s Hall of Fame.
Stacey leads the contracting and subcontracting professionals supporting all IS4S sites, ensuring excellence in acquisitions that drive speed with discipline.
Rocky Harvey
Vice President
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Rocky Harvey is a retired USAF veteran with over 20 years of service as a command pilot and over 3,000 flight hours in the C-17A and several other types of aircraft. He has served in various leadership positions including deployed combat operations, culminating as the commander of the 6th Special Operations Squadron located at Duke Field, Florida.
Prior to joining IS4S, Rocky gained experience identifying operational requirements needs in the AFSOC A5/8/9 where he learned the importance of pairing operators with acquisition experts to accurately identify and define warfighter requirements. He joined IS4S in 2021 and has held leadership roles on R-EGI and R-SDR. He is currently the cMSDR program manager.
Rocky received his Bachelor of Science degree in electrical engineering from Florida State University and his Master of Science degree in systems engineering from the Air Force Institute of Technology.
James Moore
Vice President
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James Moore joined IS4S after serving 32 years as a civil servant at Eglin Air Force Base (AFB) in Florida. At Eglin AFB James served in numerous system engineering and program management positions as well as leading two different divisions in a senior material leader (SML) role. In his SML roles, James led large and diverse groups of scientists, engineers, and technicians in the conduct of basic research, exploratory and advanced development of advanced guidance systems, as well as the development, integration, demonstration, and transition of affordable weapon vehicle systems technologies.
During his last seven years at Eglin AFB, James served as the chief engineer of a high priority Department of Defense quick reaction capability (QRC) program where he steered several QRC technology upgrade spiral efforts from technology development to engineering management development that resulted in the production and deployment of the systems. He worked closely with the sponsoring combat command authority (COCOM) to ensure the developed system’s capabilities met the warfighter needs.
James received his Bachelor of Science in electrical engineering from the University of South Alabama, and his Master of Science in electrical engineering from the University of Alabama in Huntsville.
Dennis Miller
Vice President
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Dennis M. Miller brings over 45 years of experience with the Department of Defense, including 25 years in the U.S. Air Force and 13 years as a government civilian. Throughout his career, he has held diverse roles in operational, acquisition, and sustainment areas.
During his active-duty service, Dennis focused on the research, development, integration, testing, and operation of various space and missile systems, as well as satellite command and control systems. He began his civilian career at the Missile Defense Agency, where he served as the Space Tracking and Surveillance System Program element manager and director of the Space Development Center.
Dennis later transitioned to the Air Force as a member of the Senior Executive Service, where he held several leadership positions, including director of engineering and technical management at Hill AFB and Hanscom AFB, culminating as the executive director of the Air Force Operational Test and Evaluation Center. Most recently, he worked with the Aerospace Corporation as the site lead for the Nuclear Operations Directorate. Currently, he supports various programs for IS4S.
Niceville Careers
Join us in our mission to solve complex problems of national importance in an environment where doing the right thing is more important than profit, and in a company fully owned and operated by ethical, motivated employees.
Check out our active job openings to apply!
Contact Us
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Niceville Site Address
2600 Partin Dr N
Suite 220
Niceville, FL 32578
CAGE: 7SJ39