When I worked at Raytheon, there were no PEs n staff signing off on process documents or conducting audits of our design, manufacturing, or testing processes.

When I worked at Raytheon, there were no PEs n staff signing off on process documents or conducting audits of our design, manufacturing, or testing processes. Processes were developed in accordance with relevant ISO/IEEE/ASME/whatever standards, and these standards were periodically audited by external people certified by the corresponding standards body. While many of the older engineers had PEs, I do not recall any position that required one. As for legal liability, that falls primarily with the company. The chances that an individual is going to be held legally liable for a process failure in a corporation is very low, and whether or not that person has a PE will be irrelevant.