Some examples of test systems in various facilities include thrust determination and force measurement systems, fuel systems, icing systems, combustors, nozzles, water systems, gaseous nitrogen systems, hydraulic systems, lubrication oil systems, high pressure air systems, service air systems, liquid nitrogen systems, various sensors, etc. that are needed to reliably provide test data to our customers. As part of a multi-disciplinary team, test operations engineers interface with other engineering teams across the complex including plant operations and systems, controls, instrumentation, design, facility data analysis, and modeling and simulation engineers as well as a cadre of skilled labor to ensure reliable operation and ability to meet future test needs.