Which FPCON level signals an increased threat of terrorist activity?

FPCON Charlie is the level that indicates a significant and/or imminent threat of terrorist activity. This designation is used when there is a heightened likelihood of attacks or specific intelligence indicates that an attack may occur in a defined area. At this level, security measures are intensified, and personnel may be required to increase their vigilance and readiness in response to the threat.

In this context, FPCON levels are designed to guide the response to varying levels of threat. FPCON Alpha signals a general threat, while FPCON Bravo suggests a more elevated threat level with a greater likelihood of terrorist activity. FPCON Delta is the most severe level, occupied in response to a confirmed or ongoing attack. Each of these levels is intended to adjust the security posture appropriately based on the assessed threat, with FPCON Charlie being the specific indicator of a significant and imminent risk.