You increase the range increment of your thrown grenades by 5 × your Strength bonus. In addition, you’re able to salvage enough materials to create a grenade without paying for it. Creating a grenade takes 10 minutes. You can create any grenade whose item level is less than or equal to your soldier level, but this grenade is unstable and only you can use it effectively. If anyone else tries to use the grenade, it is a dud. You can have only one grenade created by this ability at one time (if you create a new grenade using this ability, the old grenade no longer works).