Monitoring and Analysis of Military and Border Operations (MAMBO) is a project launched by members of About Face to monitor military and federal deployments involved in anti-migrant operations at the U.S. southern border. We believe this information helps expose the scale and scope of military involvement in immigration enforcement, providing transparency where official channels often obscure details. It supports journalists, advocates, and communities in holding agencies accountable, challenging harmful policies, and protecting migrant rights. All information was obtained legally using publicly available sources.