1. Know where trafficking happens."Awareness is the first thing," said Sister Ann Victory, a member of the Sisters of the Humility of Mary and board member of the nonprofit U.S. Catholic Sisters Against Human Trafficking. "If your hackles go up, pay attention."
2. Know who is at risk.Traffickers prey on persons made vulnerable by poverty, homelessness, addiction, abuse and natural disasters, according to Human Trafficking Search, a global research database.
3. Know the signs.Victims often "seem unable to speak," Sister Ann said, with traffickers "doing all the talking."
4. Ask and listen.A few simple questions can engage victims and open the door to freedom.
5. Take action.Bystanders who detect trafficking should not intervene directly, advocates said.