Attacks perpetrated by lone actors are the biggest terrorism threat to July 4th festivities in New York City and elsewhere, ...

Here is a look at notable terror attacks with fatalities on US soil since 1980. 1978-1995 - Three people die and 23 others are wounded after a string of mail bombings carried out by Ted Kaczynski.

German authorities said a Syrian teenager helped the intended attacker by translating Arabic instructions for making bombs.