Abstract: Suicide is a leading cause of death in the U.S. and has risen over the past 15 years, including among military personnel. This study explores virtual reality (VR) training as a peer-based suicide prevention tool in a military context, comparing it to traditional in-person training. Data from 738 participants at Fairchild Air Force Base assessed confidence, willingness to intervene, and competency using the ACE (Ask, Care, Escort) model and lethal means safety communication, both immediately and after three months. VR training showed higher engagement, with stronger net promoter scores and greater willingness to recommend. Participants trained in VR were more likely to intervene and reported it as more time-efficient without sacrificing content quality. Qualitative feedback emphasized VR’s immersive and engaging experience. Findings suggest VR is a promising, scalable approach to suicide prevention, particularly for younger service members, enhancing peer intervention skills without relying on traditional mental health services.