Phonetic alphabet

The phonetic alphabet is a system of spelling alphabet used by the United Nations Space Command, derived from the NATO phonetic alphabet. It is used, most commonly by the military, to spell parts of a message containing letters and numbers to avoid confusion that may arise from phonetically similar letters, especially if static or other interference is present.

Uses

 * Pelican dropships are identified by a serial number consisting of one letter from the phonetic alphabet and three numbers. Examples: Echo 419, Victor 933, Bravo 022, Kilo 023.
 * Fireteams are distinguished by phonetic letters. Example: Fireteam Zulu.
 * Bumblebee lifepods have serial numbers using three letters from the phonetic alphabet.
 * Combat personnel use phonetic values in place of abbreviations in the field for weapons, vehicles, units, and sometimes common sayings.
 * Hostiles are often referred to as "Tangos", meaning "targets".
 * Covenant species are called "Echo Tango", meaning "extraterrestrial".
 * Spartan-IIs and Spartan-IVs refer to Covenant personnel as "Alpha Bravos", meaning "alien bastards".
 * Jiralhanae are sometimes called "Bravo-Kilos", representing the nickname "Baby Kong".
 * "Oscar Mike" means "On the move."
 * "Mike-Foxtrot" is a euphemism for "motherfucker".
 * "Charlie-Foxtrot" is a euphemism for "cluster fuck".
 * Spartans are often referred to as "Sierras" by themselves and other UNSC personnel.
 * Dr. Catherine Halsey is sometimes referred to by the phonetic value of her initials, "Charlie Hotel".