Webthe saboteurs had enough explosives for two years of mayhem, with immediate plans to blow up a critical railway bridge, disrupt new york’s water supply and spread terror. Webhere are five significant ways that america was changed by 9/11. The war on terror began. Standing atop rubble with retired new york city firefighter bob. Websince the terrorist attacks of september 11, 2001, at least 39 terror plots against the united states have been foiled thanks to domestic and international. Webeighteen minutes after noon on february 26, 1993, a bomb exploded in the basement parking garage below the north tower of the world trade center. Webthe fbi revealed it used a controversial foreign surveillance tool to foil a terrorist plot on u. s. Webthe united states has been narrowly saved from lethal terrorist plots in recent years — or so it has seemed.