What does FPCON Charlie mean for security measures?

FPCON Charlie indicates that there is a credible threat level where a terrorist action is likely to occur in the near future. This condition necessitates heightened security measures and increased awareness, as the situation is serious enough to warrant concern and preparedness against potential threats.

Under FPCON Charlie, specific protocols and security enhancements are implemented to protect personnel and assets. This level of alert signifies an environment that requires vigilance and proactive measures to deter and respond to any impending risks. In contrast, the other options do not reflect the urgency and seriousness associated with FPCON Charlie, which explicitly relates to the likelihood of terrorist activity.