Threats to the Critical Transportation Infrastructure include:
- Natural Disasters (fires, floods, storms and earthquakes)
- Human Caused Disasters (HAZMAT spills and releases, major traffic collisions)
- Social, Criminal and Terrorist Activities (vandalism, sabotage, civil unrest, strikes, attacks using chemical, biological, nuclear or explosive weapons)
- Other Threats (deferred maintenance and neglect, energy and material shortages)
The Sector’s security risks are evidenced by attacks either using or against the global transportation network as indicated by the following examples:
- World Trade Center & Pentagon, September 11, 2001
- Commuter trains in Madrid
- Plots uncovered in the United Kingdom targeting airlines bound for the US
Indicators of potential terrorist planning or activities might include:
- Physical surveillance, which may include note taking or the use of binoculars, cameras or maps near key facilities
- Attempts to gain sensitive information regarding key facilities or personnel through personal contact or by telephone, mail or email.
- Attempts to penetrate or test physical security and response procedures at key facilities
- Attempts to improperly acquire explosives, weapons, ammunition, dangerous chemicals, flight manuals or other materials which could be used in a terrorist attack.
- Suspicious or improper attempts to acquire official vehicles, uniforms, badges, access cards or identification for key facilities.
- Presence of individuals who do not appear to belong in the workplace, business establishment or near a key facility.
- Behavior which appears to denote planning for terrorist activity, such as mapping out routes, playing out scenarios, monitoring key facilities, making dry runs and timing traffic flow or signals.
- Stockpiling suspicious materials or abandoning potential containers for explosives (e.g., vehicles or suitcases).
- Deploying assets or getting into position
Any single indicator by itself does not necessarily indicate terrorist activity, however, multiple indicators combined with other information may possibly suggest a terrorist threat.