42 Design, planning, engineering, and testing of industrial automation systems and components for others namely, Supervisory Control and Data Acquisition (SCADA) and Human-Machine Interface (HMI) as well as Programmable Logic Controller (PLC), and Programmable Automation Controller (PAC) and a wide range of other programming services; computer programming; development of computer programs for use in automated manufacturing of manufacturing, distribution, packaging, and palletizing; design, engineering, inspection and testing services for others in the field of instrumentation systems for SCADA and HMI as well as PLC, PAC and a wide range of other programming services; calibration and verification of instrumentation services for SCADA and HMI as well as PLC, PAC and a wide range of other programming services; commissioning and start-up, namely, factory acceptance testing (FAT), programing and configuring computer systems for others, specifically as relates to programable logic controllers (PLCs), distributed control systems (DCS), and safety interlock systems; technical support services for automation systems, namely, troubleshooting of system component, namely, SCADA and HMI as well as PLC, PAC and a wide range of other programming services and of computer software problems.