"Today" National Investigative Correspondent Jeff Rossen was able to enter one New Jersey school without giving a name. Unescorted, he went looking for the main office, per school policy. As he looked, he walked past several classrooms with kids, stopping at one to ask a teacher for directions. No one asked who he was, or what he was doing there. For two minutes, he walked through the halls, and was only stopped once he arrived at the office.