Final answer:
The technician is the person who provides progress and test result reports to the engineer and is involved in the communication and execution of testing-related deliverables.
Step-by-step explanation:
The individual who may oversee the actual work for the engineer by providing progress reports as well as chemical, physical, and mechanical test results is typically known as a technician. Technicians interface with various stakeholders in the engineering process, including designers, research engineers, manufacturing engineers, and quality assurance teams. They are responsible for defining, tracking, and executing testing deliverables to ensure timely test results which align with product timelines. In addition, they support field-testing programs and troubleshoot processes of experimentation, redesign experiments when needed, and design valid experiments to ensure the collection of highly reliable, or 'killer' data.