M.O.A.B.

The  (Massive Ordnance Air Blast bomb, nicknamed Mother Of All Bombs) is a hidden 25 kill-streak (24 with Hardline) reward featured in Call of Duty: Modern Warfare 3. The M.O.A.B. is obtainable with any Strike Chain.

Overview
The M.O.A.B. is similar to the Tactical Nuke seen in Call of Duty: Modern Warfare 2. It is earned by getting a 25 kill streak (24 with Hardline), not including Strike Package kills/ kills achieved through Pointstreaks. Also, unlike with the other pointstreaks in the Support Package, the player must not die in order to obtain M.O.A.B. Unlike the Tactical Nuke in Call of Duty: Modern Warfare 2, its detonation won't end the game, but will kill every enemy player in the game. The blast also causes an EMP to go off, eliminating all enemy equipment, electronics and pointstreaks for one minute.

A player that calls in a M.O.A.B. will also unlock Double XP for the remainder of that match for their entire team. The explosion litters the map with dust and a red tint that remains for the rest of the game, similar to the Nuke effect on the map, even if another M.O.A.B. is called in.

Trivia

 * In the Wii version of Modern Warfare 3, the M.O.A.B. does not have the same countdown sound as the Playstation 3, Xbox, or PC version of the game. The M.O.A.B. countdown on the Wii sounds the exact same as the Tactical Nuke from Modern Warfare 2.
 * Players who have not unlocked the "Fallout Shelter" challenge will be awarded the "Toxic" callsign title after dying from a M.O.A.B., similar to Call of Duty: Modern Warfare 2 where one was given the same title name when killed by a Tactical Nuke.
 * There is a callsign title in Call of Duty: Modern Warfare 2 called "MOAB" unlocked after completing the "Ultimate Sacrifice" challenge.
 * When a M.O.A.B. is used in the killcam, it will show the M.O.A.B. owner's first person view.
 * When viewing the killcam after being killed by the M.O.A.B., the map will always appear with the red tint the M.O.A.B. creates, even if it takes place before the detonation.
 * There are challenges for getting the M.O.A.B., but they cannot be viewed in the Challenges section.
 * The acquisition sound for the M.O.A.B. is the same as the Tactical Nuke.
 * The countdown sound in the Wii version is the same as the Tactical Nuke from Call of Duty: Modern Warfare 2.
 * It is possible to acquire a M.O.A.B. on the community playlist game modes Drop Zone and Infected, even though it is sometimes set for no killstreaks enabled on Infected and always set for no pointstreaks on Drop Zone. This may be because the M.O.A.B. is a hidden killstreak seen on all strike chains, including the Specialist chain, which is used during Infected.
 * At the end of a game in which the M.O.A.B. was used the music will be a low drum noise, regardless of if your team won or not.
 * This music is also used as the Special Ops menu music.
 * When a recent game involving a M.O.A.B. is viewed in Elite, the killfeed will show the player as getting a "Nuke" and the Tactical Nuke image (Create-a-Class Image) will appear next to it. (See Image)
 * The player cannot physically see the M.O.A.B, although they can hear it falling when the timer is around one second.
 * It is possible for the player to kill themself with a M.O.A.B. by getting infected in Infected game mode before the M.O.A.B. They must call it in, but then become infected before it explodes.
 * It is possible to "survive" an enemy M.O.A.B. detonation if the match ends before the detonation. Instead of dying, blood will splatter on their screen.
 * If a game ends during the countdown, the M.O.A.B will explode during the final killcam.
 * Unlike the Modern Warfare 2 announcers for Tactical Nukes, announcers will calmly announce both enemy and friendly M.O.A.B.'s.