The scorechain rewards list isn't correct here's the correct list


Defensive Support actions are designed to give the player (and teammates) an edge in normal combat, and as such will commonly be used by players trying to achieve higher score chains without the risk of wasting an offensive support action.
The following Defensive Support Actions are available:


Intel (50 points) - Launches a UAV that circles the battlefield and highlights enemy soldiers on the player's minimap. Can be shot down by RPGs and rifle fire.
Match Ammo (100 points) - Grants the player's team factory-grade precision ammo. 1.25x damage multiplier.
Flak Vests (175 points) - Grants the player's team protective vests that are tougher than normal body armour. 0.75x damage taken.
FMJ Ammo (250 points) - Grants the player's team ammunition designed to pierce light cover easily, as well as body armour. 1.50x damage multiplier.
Jammer (350 points) - Launches a jammer that renders the enemy team's minimap blind. NOTE: Launching a UAV when jammed will not overule the jamming.
Armor Piercing Rounds (450 points) - Grants the player's team special armour-piercing rounds that easily punch through enemy body armour. 2x damage multiplier.
Ballistic Vests (600 points) - Grants the player's team special protective vests that provide huge levels of protection compared to normal body armour. 0.50x damage taken.



Offensive
The following are offensive Support Actions and they are accessed by pushing 5 on the keyboard for the PC version, or left on the D-Pad for the 360 and PS3:


Mortar Strike (50 points) - Small area of effect, medium damage.
Rocket Strike (100 points) - small-medium area of effect, high damage.
Missile Attack (175 points) - Large blast radius, high damage, guided(similar to the Predator Missile from Modern Warfare 2).
Artillery Strike (250 points) - similar to Mortar Strike but with bigger blast radius, it strikes almost immediatly.
Strafing Run (350 points) - Big strike, very high damage, mark the end of the place to strike with the strafing run.
Air Strike (450 points) - Very Large blast radius, high damage, approximately 5 seconds before the strike arrives.
Cruise Missile (600 points) - Massive blast radius, capable to kill the entire enemy team, guided like the missile attack.



After you hit 600 points, the score it's doubled.