Inspector Lewis Hastie is the unit head of the National Vehicle Threat Mitigation Unit, which is a specialised police unit operating within the National Counter Terrorism Security Office (NaCTSO). The unit comprises of subject matter experts, who have a wealth of experience in the temporary vehicle security barriers through the deployment of the National Barrier Asset; understand the methodology of Vehicle as a Weapon (VAW) and Vehicle Borne Improvised Explosive Device (VBIED) attacks against people, events or infrastructure. The unit provides support and advice to all Police Forces, CT Network, Public Authorities and Commercial operations.