A Joint Intelligence Bulletin has been issued by the FBI, DHS and NCTC (National Counter Terrorism Center) reminding law enforcement, military, and security personnel to remain vigilant this summer in light of the continued interest by homegrown violent extremists (HVEs) and domestic extremists in conducting attacks in the Homeland during public and private events.

The FBI, DHS, and NCTC remain concerned that upcoming summer celebrations, events, or other large gatherings could be targeted by homegrown violent extremists (HVEs). 

Continued calls by foreign terrorist organizations (FTOs) for attacks on large crowds and civilians, along with examples of successful and disrupted plots of this nature both here and abroad, could inspire similar attacks by HVEs in the Homeland. 

Similarly, the FBI and DHS remain concerned about the potential for violence by domestic extremists at large or significant events, both public and private, during the summer of 2018. As with HVEs, most lethal violence perpetrated by domestic extremists in recent years has been
conducted by lone offenders, making them a continuous concern.

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Homegrown Violent Extremists (HVE) are defined as a person of any citizenship who has lived or operated primarily in the U.S. or its territories, is engaged in, or is preparing to engage in, ideologically motivated terrorist activities in furtherance of political or social objectives promoted by a foreign terrorist organization but whose actions are independent of direction by a foreign terrorist organization.

Domestic Extremists are defined as individuals based and operating entirely within the U.S. or its territories without direction or inspiration from a foreign terrorist group or other foreign power who seek to further political or social goals, wholly or in part, through unlawful acts of force or violence.