Some more details on the San Diego State University drug arrests — it took a female’s death by overdose to set in motion the undercover investigation, named Operation Sudden Fall, which netted 96 people, including 75 students.

And how some students can “compartmetalize.” One alleged dealer was just about to receive an M.A. in homeland security and had worked with the campus police as a security officer. Another student, arrested on suspicion of possessing cocaine and guns, was a criminal justice major.