Whitelisting a team in Anti-TK?

Basically, I have a function that stops people from being able to team-kill. What I want to do, is add a certain team to a white list. Meaning, say you have a team named "Team1" on the Whitelist, anyone on Team1 will then be able to team-kill each other.

Code:

function Fire(ShootingHandle)
    local PierceAvailable = Module.Piercing
    PiercedHumanoid = {}
    if FireAnim then FireAnim:Play(nil,nil,Module.FireAnimationSpeed) end
    if not ShootingHandle.FireSound.Playing or not ShootingHandle.FireSound.Looped then ShootingHandle.FireSound:Play() end
    local Start = (Humanoid.Torso.CFrame * CFrame.new(0,1.5,0)).p--(Handle.CFrame * CFrame.new(Module.MuzzleOffset.X,Module.MuzzleOffset.Y,Module.MuzzleOffset.Z)).p
    local Spread = Module.Spread*(AimDown and 1-Module.SpreadRedution or 1)
    local Direction = (CFrame.new(Start,Mouse.Hit.p) * CFrame.Angles(math.rad(-Spread+(math.random()*(Spread*2))),math.rad(-Spread+(math.random()*(Spread*2))),0)).lookVector
    while PierceAvailable >= 0 do
        local Hit,EndPos = RayCast(Start,Direction,5000,Character)
        if not Module.ExplosiveEnabled then
            if Hit and Hit.Parent then
                local TargetHumanoid = Hit.Parent:FindFirstChild("Humanoid")
                local TargetTorso = Hit.Parent:FindFirstChild("Torso")
                local TargetTEAM = Hit.Parent:FindFirstChild("TEAM")
                if TargetHumanoid and TargetHumanoid.Health > 0 and TargetTorso then
                    if TargetTEAM and TargetTEAM.Value ~= TEAM.Value then
                        InflictTarget:FireServer(TargetHumanoid,
                                                TargetTorso,
                                                (Hit.Name == "Head" and Module.HeadshotEnabled) and Module.BaseDamage * Module.HeadshotDamageMultiplier or Module.BaseDamage,
                                                Direction,
                                                Module.Knockback,
                                                Module.Lifesteal,
                                                Module.FlamingBullet)
                        PiercedHumanoid[TargetHumanoid] = true
                    end
                else
                    PierceAvailable = 0
                end
            end