Miami Herald South Florida just earned a shameful distinction — it is the single region in the country where the most FBI agents have been killed since G-men were created in 1908. The latest bloody chapter played out Tuesday morning. FBI Special Agents Daniel Alfin, 36, and Laura Schwartzenberger, 43, were killed in a horrific shootout at a Sunrise, Florida, apartment building where they were serving a warrant. They died in the line of duty protecting children from a man thought to be a sexual predator. Our condolences go out to their families. Three other agents were wounded. What went wrong is now the painful question that FBI investigators will work doggedly to answer. A somber George Piro, Miami FBI special agent in charge, rightly called Alfin and Schwartzenberger heroes, who left home Tuesday morning to do their jobs.