Lockheed Martin was awarded a $4 million contract by Boeing for the technology development phase of the F/A-18E/F Infrared Search and Track (IRST) program. The technology development contract follows a two-year pre-system design and development program in which Lockheed Martin was down-selected as the sole source provider. The F/A-18E/F IRST is a passive, infrared sensor system that enables long-range detection and weapons-quality track of enemy targets under normal and electronic attack environments. The system enhances survivability and lethality in both offensive and defensive counter-air roles, the company said.