The NAWCAD WOLF Air Traffic Control and Landing Systems (ATC&LS) Division, under the oLSI model, requires an upgrade to the Precision Approach Radar AN/SPN-35E Landing System Upgrade Program (LSUP). The effort covers project management, systems/hardware/software engineering, integration and test, Engineering Development Modules, qualification testing and analysis, and logistics. The task order will use CPFF Completion CLINs only. Anticipated period of performance is May 2027 through May 2032, with 100% of work performed at the contractor site.