4,000 killings or murders. we are joined tonight by one of those law enforcement heroes. i.c.e. special agent elvin hernandez. when elvin -- [ applause ] thank you. when elvin was a boy, he and his family legally immigrated to the united states from the dominican republic. at the age of 8, elvin told his dad he wanted to become a special agent. today, he leads investigations into the scourge of international sex trafficking. elvin says that if i can make