Martinez, cbs 2 news. It was a very different reaction to the same threat here in new york. It was business as usual today at nations largest Public School district. Cbs 2s dick brennan is here to explain. Reporter not always easy to explain, but we can tell you, how could two cities respond so differently to a similar close to identical email threat . Mayor de blasio called the email outlandish. Commissioner bratton said l. A. Overreacted. Sources say the email came from someone who claimed he was bullied as a student in schools on both coasts. The email says, 138 comrades would attack new york schools with Pressure Cooker bombs, nerve gas agents, machine pistols and machine guns. The email said, quote, the students at every school in the new York City School district will be massacred, mercilessly, and there is nothing you can do to stop it. We do have an investigation under way but its an investigation into a hoax. Reporter Police Commissioner bratton says the and l. A. Same but bra