Barr Group's Military, Defense and Aerospace expert witness team are internationally-recognized engineers, software developers, cryptographers and academics with expertise in state-of-the-art engineering design practices for mission-critical technology.

Our experts have supported many cases involving equipment malfunction, system hacking, security breach, and theft of data of mission or safety-critical electronics and embedded systems, and are knowledgeable in DO-178 and DO-254.

Technologies that we support include, but are not limited to:

  • Communications satellites
  • Military monitoring
  • Surveillance systems
  • Military land vehicles and airplanes


Representative Experts


Expert in embedded systems. Authored six books and over 700 papers.  Experienced working with...