Some additional behavioral red flags are if the person is:

• Hanging around or making repeated visits with no purpose
• Assessing the situation by glancing at your hands or around you
• Acting odd
• Pacing
• Getting extremely angry, red in the face, or shaking
• Refusing to comply or cooperate with instructions
• Violating your personal space or touching you
• Carrying a weapon such as a
  knife or side arm