U.s. stepping up the security

9/11 was a wakeup for homeland security and anti terrorist actions in our country
Like :Improve anti-terrorism intelligence.Now we have more surveillance about terrorist groups and watch what they do. So mass chaos doesn't go on like 9/11 again. Constant recording.We continue to improve our security because other attacks like Boston bombing they had cameras and just one face shot of the terrorist and we took them down before they could did anything else.

Enhance transportation security.We also stepped up transportation security like at airports they have better censors for checking bags and body checks and, do random body checks just incise they have something harmful coming on the plane.