Ship alerts on Battlestar Galactica are known as action stations. These alerts are given to prepare Colonial Battlestar crews for battle. The alerts are typically by voice as well as by a klaxon siren in the following format:
"Action stations, action stations. Set condition one throughout the ship."
The three states of readiness are:
Condition One: This alert places the ship at its highest state of readiness. All crews go to their combat posts. Bulkhead doors are closed in case of decompression. Additional Viper pilots are scrambled to supplement the Combat Air Patrol and flight support crews man their stations. The CIC is locked down and the ship's Commander is on station.
Condition Two: Threat probable, but not present. Crew readiness is somewhat more relaxed then full readiness, and crewmen actually take sleep shifts (which is impossible in Condition One).
Condition Three: This is the "all clear" alert, returning crews to their normal, non-combat duties after Conditions One or Two.
Note
Condition One and Two are similar to the famous "Red Alert" and "Yellow Alert" used throughout the Star Trek television series.