With over 44 years of a distinguished fire services career, Chief Robertson served in all ranks except for Battalion Chief, from Firefighter to the Executive Assistant Chief / Chief of Staff, of the one-thousand-person City of Fort Worth Fire Department, where he also served as Chief of Training, Emergency Services, and Apparatus. He was recognized for valor and excellence in service by the Fort Worth Fire Department on numerous occasions and was one of the original members of the Texas Task Force 1 USAR as a squad leader. He managed the Equipment Section for seventeen years, oversaw the Fire Apparatus Shops, led the Training and Education Division, and managed the Fire Department 9-1-1 Communications Center, which dispatched between three hundred and five hundred incidents per day and provided dispatching for three other suburban fire departments. In addition, Chief Robertson oversaw the City of Fort Worth’s Emergency Management Office, and he served as the Assistant Chief over the Quartermaster and Supply Division.