4.3 Aviation Security
In the past decades, terrorism has consistently been one of the largest threats to aviation safety and security. Recently, terrorist groups have turned to use of CBRN threats, or use of chemical, biological, radiological, and nuclear materials. These materials can be used in creating explosives or to " create mass casualties and vastly disrupt the society by causing illness or even death" (Ivona, 2023). CBRN agents are especially dangerous due to the fact that are often invisible or difficult to detect. TSA can take measures to mitigate the threat of CBRN through layers of security. Firstly, passengers are screened when they purchase tickets to detect known terrorists or terrorist suspects. Additionally, canines can often be found at airports to detect any explosive materials. Passengers are also screened and any carry-on luggage is thoroughly checked for any materials that fall under the umbrella of CBRN threats. TSA agents can be trained in visually spotting indicat