Second Chance is a Perk that has been introduced since Call of Duty: Modern Warfare with the name Last Stand. This is the Black Ops version. It costs 2000 COD points and It's unlocked at level 4 (when you unlock the Create a Class mode). It belongs to the 3rd perk tier.
 Second Chance
Basically, this perk allows you to pull out your pistol before dying in order to kill the enemy who wounded you (or kill any other enemy around). It's an useful perk if you're afraid of loosing your killstreak.
Note: Even If you didn't equip a pistol in your Secondaries, you'll pull out a basic M1911.
 Second Chance Pro
|Second Chance pro|
The Pro version allows you to do what the Normal version does plus: Survive longer (around 20 secs) and get revived by friendly players.
In order to obtain the Pro version you have to:
- Kill 5 times the enemy who wounded you.
- Kill 10 enemies while in Second Chance.
- Get 1 headshot while in Second Chance.
- Save 3000 COD points (to buy the Pro version after completing the challenges)
Related ThreadsSecond Chance/Pro Discussion Thread - last post by @ May 24, 2011
Second Chance Pro Is Now Definitely Fine - last post by @ Feb 21, 2011
Second Chance is getting Nerfed - last post by @ Jan 10, 2011
Equipment and second chance - last post by @ Oct 19, 2010
Second Chance has no place in Hardcore Team Deathmatch - last post by @ Aug 14, 2012