Potential Indicators of Terrorist Activities Related to Construction Sites

What Should I Consider Suspicious?

Behavior Indicators

  • Removal or altering of survey stakes on a construction site.
  • Anyone inquiring about security at a construction area.
  • Surveillance of the site by unknown individuals.
  • Environmental and/or antigovernment slogans, banners, or signs at the site or in the nearby area that threaten or imply violence.
  • Group identifiers or warning signs left on the site.
  • People entering a construction site after work hours.
  • Warnings or threats sent to construction companies.
  • Unscheduled deliveries of materials/equipment.
  • Items found on-site that do not belong or are not a part of the site materials.
  • Vandalism at similar sites.
  • Thefts of hazardous materials.
  • Evidence of intentional damage to cables, gas lines, and power lines.
  • Vandalism at the site, including window breakage, slashed tires, spray-painting, sand/sugar in fuel tanks, cutting of fuel and brake lines, and/or glued locks.
  • Arson at buildings under construction, work sheds, or any kind of equipment, including trucks, bulldozers, and cranes.
    Following a crime on-site, the discovery of discarded clothing, shoes/boots, tools, or spray-paint cans along roads and paths near the site.

Note: It is important to remember that just because someone’s speech, actions, beliefs, appearance, or way of life is different, it does not mean that he or she is suspicious.

What Should I Do?

Maintain Your Construction Sites

  • Secure potentially dangerous or hazardous products.
  • Clean the site regularly.
  • Watch for people and actions that are out of place.
  • Know what material and equipment should be on-site.
  • Know what subcontractors and workers should be on-site.
  • Do not leave the site unattended for long periods.
  • Require all subcontractors to be licensed and insured.

If something seems wrong, notify law enforcement authorities. Do not jeopardize your safety or the safety of others.

Preventing terrorism is a community effort. By learning what to look for, you can make a positive contribution in the fight against terrorism.

The partnership between the community and law enforcement is essential to the success of anti-terrorism efforts. Some of the activities, taken individually, could be innocent and must be examined by law enforcement professionals in a larger context to determine whether there is a basis to investigate. The activities outlined on this handout are by no means all-inclusive but have been compiled from a review of terrorist events over several years.

Osceola County Sheriff’s Office
407-348-2222