The camo also emits a high-pitched shriek when active. Mercs have it equipped during the levels 'Celerium' and ' Judgement Day'. The camo modifies the player's vision to some degree, giving the screen a minor green tint. Despite what it may seem at first, it does not seem to hide the player from enemies, rather it significantly decreases their accuracy, possibly due to an oversight. The player can also obtain it in the mission ' Achilles' Veil', by going downstairs at the right tower and hacking a box. By pressing 7 (on PC), or ↓ on the D-Pad, the player can cloak themselves with the surroundings, but the weapon equipped by the player will not be affected by the camouflage, due to it being an outside agency. First found in ' Celerium', the player is able to get it once they go indoors into the underground lab using the Access Kit. Optical Camouflage is a piece of equipment, featured in the Call of Duty: Black Ops II campaign.
For a similar ability in Call of Duty: Advanced Warfare, see Exo Cloak. For a similar ability in Call of Duty: Black Ops III, see Active Camo.
