A -- Scientific, Engineering, Technical, and Analytical Support

This modification is issued to delete the requirement for a special background investigation (SBI) level clearance" and restate the third sentence of the basic synopsis. The sentence is restated as follows: "These areas include the research, development, and desig of high assured building blocks for trustworthy sysems, high assurance real-time systems, system requirements engineering, trustworthy database managemenet systems, networks, and distributed systems, the foundations of securitiy, information warfare technology, and information security capabilities".