In fact, in the last six months, there have been 172 IEDs reported in the United States, according to a government count that an official revealed Tuesday in answer to questions about U.S. preparedness. The official shared the figures, which were gathered before Monday’s explosion, only on the condition that neither the official nor the official’s office be identified.
The official shared information in an email that indicated most American IED attacks were small: “Homemade fireworks, childish pranks and other such non-terror related activities.”
But the information also notes that American officials have long understood the threat, and includes a warning that’s been distributed to other agencies: “Expect IED attacks by Homegrown Violent Extremists (HVEs) and individuals to continue throughout the United States. High profile events will present additional targets for HVEs and other individuals.”