After months of coordination between the Department of Homeland Security (DHS) Science and Technology Directorate (S&T) and the New York Police Department (NYPD) Counter Terrorism Division, the NYPD conducted an active shooter training exercise on November 22. The exercise not only tested their training and proficiency, but also allowed them to incorporate several commercial technologies that could benefit future emergency situations.  During the active shooter exercise, US DHS Deputy Under Secretary for Science and Technology, Dr. Robert Griffin, was joined by Homeland Secretary Jeh Johnson, NYC Mayor Bill de Blasio, Police Commissioner William Bratton, and Fire Commissioner Daniel Nigro.   Read more:  http://www.dhs.gov/science-and-technology/st-supports-nypd-active-shooter-exercise