Tactical Mask

Tactical Mask is a Tier 3 perk in Call of Duty: Black Ops and will appear in Call of Duty: Black Ops II. In Call of Duty: Black Ops it is one of the three perks in the game that is unlocked by default. It is roughly equivalent to a combination of the Gas Mask and Shades perks of Call of Duty: World at War.

Overview
Tactical Mask renders the player immune to the effects of Nova Gas.

Its Pro version reduces the effects of Flashbangs and Concussion Grenades on the player by 90%. This is to say that if hit by a Flashbang, the player's vision will dim for a second before returning to normal. If hit by a Concussion Grenade, the player's vision will blur as if stunned, and movement and turning speed will be momentarily affected. This lasts for about two seconds before the player's vision returned to normal. It also reveals the general direction of any enemies that are hit with the player's Flashbangs or Concussion Grenades via a small yellow directional indicator near the cross-hair. If multiple enemies are stunned or blinded by the player's tactical grenades, multiple arrows will show up on his cross-hair. Ghost Pro users will not give off an indicator.

Tips
A great way of using it is throw a Flashbang or a Concussion Grenade into a room or near an objective to reveal any enemies lying in ambush and by extension stun them.

Pro Challenges

 * Flash Kills — Kill 20 enemies that are blinded by the player's Flashbang.
 * Concussion Kills — Kill 20 enemies that are stunned by the player's Concussion Grenade.
 * Nova Gas Kills — Kill 20 enemies poisoned by the player's Nova Gas.

Call of Duty: Black Ops II
"Reduce the effects of Flash, Concussion, and Shock Charges."

- Create-a-Class Description.

Tactical Mask returns in Call of Duty: Black Ops II. It reduces the effects of flashbangs, concussion grenades and shock charges.