Fighting Force 4 takes place at Pabellón de Esgrima, Centro Olímpico in Santo Domingo, Dominican Republic. In the main event, 49-year-old Titan FC COO Lex McMahon will make his professional mixed martial arts debut when he takes on pro veteran Justin Thornton at heavyweight. McMahon currently serves on the board of directors for AHERO. AHERO connects Veterans through outdoor activities as a means to recover from their physical wounds and psychological trauma to reintegrate with American life. To help bring attention to the topics of Veteran Suicide Awareness and Post-Traumatic Stress Disorder, McMahon aims to use this fight to raise funds for the non-profit to use towards its mission.