What is FPCON Delta?

FPCON Delta indicates the highest level of security alert and is activated specifically when a terrorist attack has occurred, or when there is a credible threat against personnel or operations. This condition requires immediate action to protect personnel and assets, and it often involves measures such as increased patrols, heightened surveillance, and additional restrictions on access to the installation.

This state reflects an urgent situation where there is a real and imminent threat, requiring all personnel to be particularly vigilant and responsive. The distinctive nature of FPCON Delta is that it is a reactionary measure, deployed in response to a specific incident or threat, distinguishing it from other FPCON levels that apply under normal circumstances or as preventative measures.