Okay, let’s break this down. Roger has mechanical engineering skills, which are in demand. Aerospace engineering is a specialized field, but it’s not extremely rare. ASME standards and Catia are specific skills that can be valuable. Location is Orange County, California, which has a strong tech industry. However, considering the lack of specific experience or education mentioned, I'll estimate a lower rate. Maybe around $125 per hour, which is on the lower end of the scale for mechanical engineers with similar skills. Some sources suggest mechanical engineers with 5-10 years of experience can earn $100-$150 per hour. Since Roger’s experience isn’t specified, I'll aim for the lower end of that range.