42 Testing of electronic component devices, assemblies and systems, namely, sonar systems, combat systems, radar systems, magnetic video recordings rotary head scanner assemblies and broadcast quality video recording devices and parts therefore; Large-scale power conversion and electric propulsion research and development services for others; Design and development of life-cycle service/support of steam and gas turbines for a variety of large and small high-performance, complex power systems and rotating machinery; System integration and test services for military and commercial customers; Engineering services relating to mechanical and electrical power systems and system components for shipboard and industrial use including system analysis, design, modeling, optimizing, implementation, engineering, equipment design, equipment inspection, software design and coding, and performance analysis; and the testing and system integration of electronic systems and subsystems