This is a sole-source opportunity for the annual renewal of MathWorks software licenses and maintenance support for the Naval Undersea Warfare Center in Newport. The requirement is for proprietary MATLAB and Simulink toolsets essential for Model-Based Systems Engineering, acoustic modeling, and undersea platform simulations. No substitutions are allowed, as switching software would require complete redesign and cause significant cost overruns and schedule delays. The contract will be a firm fixed price purchase order, and the solicitation is posted for less than 15 days. Performance of services is at the Naval Undersea Warfare Center Division, Newport.