User blog comment:N7/Battlefield 3 "99 Problems" trailer released/@comment-4431589-20110926210150/@comment-2224289-20110927165843

if it's like 2142, you'll always get a medikit then choose two of these: Defibrillator, Underbarrel Shotgun, Underbarrel Rifle Rocket (basically Grenade Launcher) or Smoke Grenades and SL's got specific unlockables capabilities for squad, etc.

I use Defib and Shotgun alongside Medikit, but I didn't unlocked yet the unlockables that come with Northern Strike, but here's an idea for ya.