The Department of Homeland Security (DHS) issued an updated terror bulletin on Thursday highlighting the threat of weaponized drones, chemical attacks and the continued targeting of commercial aircraft.

“We continue to face one of the most challenging threat environments since 9/11, as foreign terrorist organizations exploit the internet to inspire, enable or direct individuals already here in the homeland to commit terrorist acts,” reads the bulletin.

The National Terrorism Advisory System bulletin, which replaced the old color-coded system, is used to give the public and local law enforcement a summary about ongoing and potentially new terror threats.

“The current bulletin introduces unmanned aircraft systems as potential threats and highlights sustained concern regarding threats against commercial aviation and air cargo,” said DHS acting press secretary Tyler Houlton in a statement.

There’s been an “uptick in terrorist interest” in using unmanned aerial systems as weapons in the United States and other western countries, according to a senior DHS official.

These tactics have been used by terrorists on the battlefield, and the department wants to “guard against those tactics being exported to the west,” said the official.

The official said that DHS wants to be “forward leaning” about seeing what terrorists are doing overseas and tactics they might adopt in the future.

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Source: ABC