• Renting accommodations using a false name
• Reluctance to give personal and/or work information
• Using a credit card registered in someone else’s name
• Exhibits secretive and/or paranoid behavior about giving ID information
• Presenting a questionable, fraudulent or recently issued driver’s license
• Asking for a ground floor unit, which can facilitate escape, or requesting a specific view of bridges, airports, military or government installations
• Choosing a secluded, less visible unit
• Keeping shades drawn at all times
• Replacing a rental unit’s locks and keys
• Receiving frequent suspicious or unusual visitors
• Following no established departure or return routine, such as a work schedule
• Having little or no furniture
• Refusing to allow staff to enter a unit or room
• Acting paranoid or secretive
• Having limited activity outside of the unit
• Using pay phones or cell phones only, not a land-line phone
• Traveling frequently
• Having strange or suspicious items or documents in the unit
• Making anti-American comments

Many of these activities, in and of themselves, may not indicate criminal activity. Taken together, however, they may be a cause for concern. If you observe people acting suspiciously, don’t hesitate to contact local law enforcement.

Protective Measures

• Secure entrances (within fire department guidelines) to limit access
• Use employee identification cards or badges
• Screen contractors and temporary workers, and issue them temporary identification cards or passes
• Create and maintain an emergency response plan
• Test emergency lighting, and make repairs when necessary
• Test elevator recall (fire service), fire alarm, and public address systems.