User blog:Callofduty4/Achievements and next Spec Ops missions revealed via PC patch

After the most recent Modern Warfare 3 patch for PC, the achievements for the next two Spec Ops DLC missions have been revealed, along with the names of the two missions and details about them.

"Iron Clad" appears to be a mission involving the player controlling a tank.

Source: PC Patch Reveals Next Spec Ops & Acheivements: “Iron Clad & Kill Switch” - Charlie Intel