All of the perks in slot 1 are blue in colour
Special Grenades x3

This perk gives you 3 of your secondary grenades. So instead of 1 flare you would get 3. Can be used with flares or the turban gas, but NOT the smoke.
Useful on modes like headquaters and teamdeathmatch
It is unlocked at level 4
Satchel Charge x2

This perk gives you 2 satchel charges. Satchel charges are remote explosives, to plant them you need to press the aim button (L1 for ps3 or LB for xbox 360) and to dedonate them press the fire button (R1 for ps3 or RB for xbox 360). They can be set off as well by double tapping [] for ps3 or x for xbox 360
Useful on modes like search and destroy and headquaters
It is unlocked at level 4
M9A1 Bazooka x2

This perk gives you 2 M9A1 Bazookas. The Bazookas are rocket prepelled explosives, to fire them all you have to do is select them (press the left button) and press the fire button (R1 for ps3 or RB for xbox 360). You can fire them while aiming down the sights for a more accurate shot. The sights of the M9A1 Bazooka also zoom in to about X2 so they make good binoculars.
Useful on all modes
It is unlocked at level 4
Bomb Squad

This perk gives you the ability to see enemy explosives. If an ememy explosive is near by a flaming skull picture will show up on screen pointing out the exact location of the explosive.

The picture will even show ememys explosives that are round corners and through walls.
Useful on modes like headquaters and search and destroy
It is unlocked at level 16
Bouncing Betty X 2

This perk gives you 2 bouncing bettys. Bouncing bettys are trip activated mines that "bounce" up to chest height when an ememy gets to close. Bouncing bettys have a 360 degrees blast radius, so its not best to set them close to you when camping. Also note that even though they bounce at chest height you WILL still be damaged if you crouch or go prone near them. To set them down all you need to do is press the fire button (R1 for ps3 or RB for xbox 360)
Useful on modes like capture the flag and domination
It is unlocked at level 24
Bandolier

This perk gives you max ammo for both of you weapons you spawn with. It triples your reserve ammunition that the player is carrying when he spawns, which is also the maximum amount of ammunition that can be carried. This perk works well with weapons with a high rate of fire or players who have a tendency to use up ammunition quickly.
Useful on modes like teamdeath match and domination
It is unlocked at level 40
Primary Grenade X 2

This perk gives you 2 primary grenades. This perk can be usful on small maps where your grenades are valuble. Useful for people on the move.
Useful on modes like teamdeath match and free-for-all
It is unlocked at level 44
M2 Flamethrower

This perk gives you the M2 flamethrower. To equipt it press left on the D-Pad (directional buttons) To fire the flames press the fire button (R1 for ps3 or RB for xbox 360). The damage of the flamethrower is about the same as the trench gun. It doesnt have ammo it only overheats, great for clearing out rooms.
Useful on modes like headquaters and war
It is unlocked at level 65
