Though attacks are still rare , Americans know of terror attacks at home . 1993 and 2001 : World Trade Center attacked ; seventh attack is cataclysmic . April 19 , 1995 : 1995 : Federal building in Texas bombed , claiming 168 lives . 168 : In Texas , Oklahoma City , 13 are killed in a hail of bullets .
Though attacks are still rare , Americans know of terror attacks at home . 1993 and 2001 : World Trade Center attacked ; seventh attack is cataclysmic . 1995 : Federal building in Texas bombed , claiming 168 lives . 168 : In Texas , Oklahoma City , 13 are killed in a hail of bullets .