Mr. Williams joined George Donnelly Testing & Inspections in 2022 after serving in the U.S. Navy and defense industry. Mr. Williams is a Service-Disabled Veteran with 30+ years of active-duty military service. Prior to joining GDTI-Dallas, Mr. Williams worked within the defense industry as a technical director, systems engineer, and program manager. Mr. Williams is certified by the International Concrete Repair Institute and a member of the ASTM FO6 committee. Mark has worked closely with George on several concrete testing and failure analysis projects in Texas, Louisiana, and Arkansas. Mr. Williams’ concrete moisture testing business (SAM UEI: UFC4QC24TH33) is certified by the Small Business Association as a Service-Disabled Veteran-Owned Small Business (SDVOSB). Mr. Williams recently completed Training at NFSI and earned a Walkway Auditor Certificate Holder certificate. This certificate was awarded after completing training and testing at the National Floor Safety Institute (NFSI) in Southlake, Texas. Training included the use and operation of various tribometers and slip meters along with methods of measurement of floor surface co-efficient of friction and floor safety auditing.