Hired on at DFW Airport DPS in 2001. He transferred to the SWAT/Solo Motors Section in 2002. Marc served as point man, ATL, TL and was the SWAT Team Commander from 2016-2020. He holds a Master Peace Officer certificate, TCOLE instructor, is a Firearms Instructor, Patrol Rifle Instructor, Red Dot Pistol Instructor, Less Lethal Instructor, Use of Force Instructor, TASER Instructor, Simunitions Safety Instructor, is Force Science certified, PepperBall Instructor, and an ALERRT Instructor. Marc served as the department's Rangemaster from 01/2017 until 06/2026 and is currently assigned to the RTCC, Special Operations.