High Alert

High Alert is a Tier 2 Perk featured in Call of Duty: Modern Warfare, Call of Duty: Vanguard, a Tier 3 perk in Call of Duty: Mobile and an Ultimate Perk in Call of Duty: Modern Warfare II.
==Call of Duty: Modern Warfare==
High Alert triggers a yellow outline around the player's HUD when an enemy outside their view sees them, similar to the Perception trait in Call of Duty: Infinite Warfare. The perk will also be triggered when an enemy Wheelson, IAV, or Chopper Gunner is targeting the user, but does not warn them from enemies with the Cold-Blooded perk.
In Call of Duty: Warzone, High Alert also allows players to hear footsteps from enemies using Dead Silence.
==Call of Duty: Mobile==
High Alert returns in Call of Duty: Mobile as a Tier 3 perk. It was added during the Season 10 The Hunt update.
It functions identically like Modern Warfare version, triggers a yellow outline around the player's HUD, when an enemy outside their view sees them. It also mark the enemies, their equipment, and their scorestreaks by aiming down sights at the item of interest.
==Call of Duty: Vanguard==
High Alert returns in Call of Duty: Vanguard as a Tier 2 perk.
==Call of Duty: Modern Warfare II==
High Alert returns in Call of Duty: Modern Warfare II as a Ultimate Perk.
==Call of Duty: Warzone 2.0==
High Alert returns in Call of Duty: Warzone 2.0 as a Perk.
Category:Call of Duty: Modern Warfare (2019) Tier 2 Perks
Category:Call of Duty: Mobile Tier 3 Perks
Category:Call of Duty: Vanguard Tier 2 Perks
Category:Call of Duty: Modern Warfare II Ultimate Perks
Category:Call of Duty: Warzone 2.0 Perks