Source: Bridget Johnson RJ Media
The Department of Homeland Security reissued for the seventh time a National Terrorism Advisory System Bulletin, which makes note of terrorists’ potential to use drones and chemical attacks outside of the groups’ occupied territory and conflict zones.
The NTAS Bulletin replaced in December 2015 the post-9/11 color-coded alert system. The higher levels of advisory in the NTAS system are Elevated Alert or Imminent Alert; neither have been used since the system went into effect.
