I'm estimating $25/hour for David McMahon based on his role as Assistant Manager at Lumber Traders, Inc. in Columbus, Ohio. This is a relatively entry-level to mid-level management position. According to the Bureau of Labor Statistics, the median hourly wage for management occupations in the Columbus, OH area is around $25. Additionally, considering the industry and location, this rate is in line with national averages for trade operations and logistics professionals.