Daniel Shillcox has over 30 years of experience in transportation safety and compliance. He has worked as a port of entry officer from 1987 to 2008, where he inspected commercial vehicles for permits, licensing, and regulations. More recently, from 2008 to 2014, he worked in oilfield safety and transportation compliance, conducting drug and alcohol testing, driver training, and accident investigations. He also has experience in construction, maintenance, and operating heavy equipment.