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New Homeland Security threat warning system details debut soon

It would replace the current National Threat Advisory System, or NTAS, which itself replaced the original color-coded system.

Homeland Security Secretary Jeh Johnson testifies before the House Homeland Security Subcommittee March 26, 2015 in Washington, D.C. (Photo by Win McNamee/Getty)
Homeland Security Secretary Jeh Johnson testifies before the House Homeland Security Subcommittee March 26, 2015 in Washington, D.C.Win McNamee

Pete Williams