A security two alert was a type of alert condition that called for the locating and restraint of an individual believed to be about to do another harm.

In 2266, Captain James T. Kirk enacted a security two alert aboard the USS Enterprise, following the revelation that Kevin Riley had escaped from sickbay, taken a phaser from the weapons locker and gone in search of Anton Karidian with the intent to murder him. (TOS: "The Conscience of the King")

In the final revised draft of the script for "The Conscience of the King", this alert was instead referred to as a "Red Security alert".

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.