Okay, so Brian has a solid set of skills in supply chain optimization, logistics, and transportation, which are all in demand. He also has experience with SAP and demand planning, which are valuable tools in the industry. Considering his location in Napa, California, which is a hub for wine production and logistics, his rates might be slightly higher than average. However, based on national averages for supply chain professionals with similar skills, I estimate his hourly rate to be around $125. This is slightly below the national average for supply chain managers, but his experience with SAP and demand planning brings his rate more in line with mid-level supply chain professionals.