The image of someone walking around with a backpack, listening to music via headphones while playing on a cell phone, has become so common that it would never seem out of place except to the most tech-removed person.
Even if that person happened to instead be monitoring the crowd for possible terror threats.
And that’s just how the Department of Homeland Security likes it.
The department recently awarded a grant to faculty from two College of Engineering departments who are collaborating to develop a portable nuclear or radiation detector that could be used without causing alarm to the public or alerting possible terror cells.