The Blast Shield is an equipment item in Call of Duty: Modern Warfare 2. The Blast Shield provides a 0.65x damage reduction against explosives as well as immunity to Stun Grenade, but not Flash Grenades. It is similar to the perk Flak Jacket from Call of Duty: World at War and Call of Duty: Black Ops. Pressing the Use Equipment button toggles the mask on or off. While wearing the Blast Shield, the mini-map is lost and the far edges of a player's screen are blacked out. It is not to be confused with the Riot Shield, which is a Primary Weapon rather than equipment. However, if used in conjunction, the Blast Shield and the Riot Shield can reduce the fatality risk from Semtex and other explosives unless the enemy is using Danger Close, mainly because the two cancel each other out, much like St