(CNN)Terror attacks with casualties on U.S. soil since 1980:
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U.S. Terrorist Attacks Fast Facts
1978-1995 - Three people die and 23 others are wounded after a string of mail bombings carried out by Ted Kaczynski. "The Unabomber," as he is also known, is serving eight life sentences for murder. He was not charged with terrorism, but the string of bombings is considered to be a terror case.
February 26, 1993 - A bomb explodes on the second subterranean level of Vista Hotel's public parking garage, below the 2 World Trade Center building. Six people are killed, and more than 1,000 people are treated for injuries. Six suspects are convicted of participating in the bombing. The seventh suspect, Abdul Rahman Yasin, is still at large.
April 19, 1995 - A bomb rips through the Alfred P. Murrah Federal Building in Oklahoma City, Oklahoma, killing 168 people and injuring almost 700. Timothy McVeigh is convicted on federal murder charges and executed in 2001.
July 27, 1996 - A bomb explodes in Centennial Olympic Park in Atlanta during the middle of a concert during the Summer Olympics. One person is killed, another dies from a heart attack, and 111 others are injured. Bombing suspect Eric Robert Rudolph is arrested in North Carolina in 2003, after being indicted in 2000 for the Atlanta bombing and for other bombings, including one at an abortion clinic where one person died. Rudolph is serving four consecutive sentences of life in prison plus 120 years for the attacks.
September 11, 2001 - Nineteen al Qaeda members hijack four U.S. passenger airliners. Two are flown into the Twin Towers in New York, one crashes into the Pentagon and another crashes into the Pennsylvania countryside after passengers attempt to wrest control of the aircraft to prevent an attack on the U.S. Capitol. 2,753 people are killed at the World Trade Center site; 184 at the Pentagon; and 40 in Shanksville, Pennsylvania. A total of 2,977 people are killed.
November 5, 2009 - Major Nidal Hassan goes on a shooting rampage at a military processing center at Fort Hood, Texas, killing 13 and wounding 32. Hassan is convicted of 13 counts of murders and 32 counts of attempted murder. He has been given the death penalty. Hassan was not charged with terrorism, but the rampage is considered by many to be a terror incident.
April 15, 2013 - Twin bomb blasts explode near the finish line of the Boston Marathon, killing three and wounding at least 264. Suspect Dzhokhar Tsarnaev has been charged by the U.S. government with one count of using and conspiring to use a weapon of mass destruction resulting in death and one count of malicious destruction of property by means of an explosive device resulting in death. He is given the death penalty on June 25, 2015.
July 16, 2015 - Mohammad Abdulazeez opens fire on a military recruiting center and a Navy reserve facility in Chattanooga, Tennessee, killing four U.S. Marines and a Navy sailor. FBI Director James Comey later says Abdulazeez's actions were "motivated by foreign terrorist organization propaganda," adding that it's difficult to determine which terrorist group may have inspired him.