Editing Sentinel launcher

{{Status|Canon}}
{{Conjectural title}}
[[File:H3 SentinelLauncher.jpg|thumb|325px|An [[Aggressor Sentinel]] emerging from a Sentinel launcher.]]
'''Sentinel launchers''' are small armor-covered devices built into the walls of [[Forerunner]] facilities. [[Aggressor Sentinel]]s are sometimes deployed via these devices when reacting to a [[Flood]] outbreak or other situation. They can be found in numerous locations, such as the [[sentinel wall]], the [[Control Room (Installation 04)#Installation 08|control room]], [[Installation 00]]'s [[cartographer]], and the [[Absolute Record]].<ref name="icon">'''Halo 2''', campaign level ''[[Sacred Icon]]''</ref><ref name="ark">'''Halo 3''', campaign level ''[[The Ark]]''</ref><ref name="04B">'''Halo 3''', campaign level ''[[Halo (Halo 3 level)|Halo]]''</ref><ref>'''Halo: Escalation''', ''[[Halo: Escalation Issue 23|Issue #23]]''</ref>

== Overview ==
When hostile entities, such as the [[Flood]], are detected in the immediate area, the sentinel launchers open their covers and dispense [[Aggressor Sentinel]]s. When releasing an Aggressor, the launcher emits a noise that increases in pitch until the Aggressor appears.{{Ref/Reuse|icon}}{{Ref/Reuse|ark}}{{Ref/Reuse|04B}}

A sentinel launcher is at its most vulnerable when its armored cover opens to release an Aggressor. It is the most susceptible to overcharged [[Type-25 plasma pistol|plasma pistol]] shots, [[Anskum-pattern plasma grenade|plasma explosions]], and even [[Melee|physical attacks]]. Upon destruction, a sentinel launcher emits an [[electromagnetic pulse]] to its surroundings.{{Ref/Reuse|icon}}{{Ref/Reuse|ark}}{{Ref/Reuse|04B}}

A sentinel launcher, however, is linked to Sentinel Defense Network on Installation 00. When Voridus disabled the Defense Network, the Sentinels cannot launch from it, resulting in the Flood are able to clog many of Launchers due to the network is inoperable. When the Defense Network is reactivated, the Sentinels are once again can be launched to resume their duty.

== Gameplay ==
In ''Halo 2'', sentinel launchers can only be found in the campaign level ''[[Sacred Icon]]'', and consistently release Aggressors to combat [[Flood combat forms]] and [[Thel 'Vadam]].{{Ref/Reuse|icon}}

In ''Halo 3'', sentinel launchers can be found in the campaign levels ''[[The Ark (level)|The Ark]]'' and ''[[Halo (Halo 3 level)|Halo]]''. In addition to being allied with [[John-117]], they are also more durable and release Aggressors at a quicker rate than those in ''Halo 2''. In addition, the hatch closes immediately after the Aggressor is released to prevent weapon fire from getting into the launcher, although this can be bypassed by throwing a grenade before it closes.{{Ref/Reuse|ark}}{{Ref/Reuse|04B}}

In ''Halo Wars 2: Awakening The Nightmare'', Protector Sentinels and Aggressor Sentinels mainly appear from Sentinel Launchers. They can only be disabled temporarily by Voridus' EMP fields and when operating, they come in an endless wave.

==Trivia==
*With the [[M41 SSR MAV/AW|Rocket Launcher]], you can lock onto Sentinel launchers as if they were vehicles.
*In [[Sacred Icon]], there are many destroyed Sentinel launchers found throughout the level. Despite appearing destroyed, these launchers can be destroyed again(with the armored cover falling out). This is easily seen in the gondola room where, after pressing the holo-panel, all the Sentinel launchers are destroyed, including the ones that are already destroyed.

== Images ==

<gallery>
File:H2_ SentinelLauncher.jpg|An inactive Sentinel Launcher at the sentinel wall.
File:H2_SentinelLauncher_Destroyed.jpg|A destroyed Sentinel launcher at the sentinel wall.
File:H3_ SentinelLauncher_Opening.jpg|A Sentinel launcher moments before deploying an Aggressor Sentinel.
File:H3_ SentinelLauncher_Destroyed.jpg|A destroyed Sentinel launcher on Installation 00.
File:HINF SentinelLauncherConcept.jpg|Concept art of a Sentinel launcher (right) in ''[[Halo Infinite]]''.
</gallery>

==List of appearances==
*''[[Halo 2]]'' {{1st}}
*''[[Halo 3]]''
*''[[Halo 2: Anniversary]]''
*''[[Halo: Escalation]]''
*''[[Halo Infinite]]''

==Sources==
{{Ref/Sources}}

{{Forerunner|sentinel}}
[[Category:Forerunner technology]]