Why does this kill people I use "IF" with to ignore?

I edited the default linkedrocket, and it works perfectly, it doesn't kill soldiers, and kill enemies and ignores players. But here's when it gets complicated. When I hit an enemy and kill/damage it, the explosion damages/kills any other soldier or player in the vicinity! It's a really annoying bug! I'll leave a bold message in the script to tell you where I THINK the error is. Btw, this is part of the rocket script.

function blow(hit)
	Hit = hit
	plr = game.Players:GetPlayerFromCharacter(hit.Parent)
	local explosion = Instance.new("Explosion")
	explosion.DestroyJointRadiusPercent = 0 -- neck welds won't be destroyed
	explosion.BlastRadius = 20
	explosion.BlastPressure = 1000
		
		local maxDamage = 100		
		
		local explosion = Instance.new("Explosion")
		explosion.DestroyJointRadiusPercent = 0 -- neck welds won't be destroyed
		explosion.BlastRadius = 20
		explosion.BlastPressure = 1000
		
		explosion.Hit:connect(function(hitPart, partDistance)
		local humanoid = hitPart.Parent and hitPart.Parent:FindFirstChild("Humanoid")
		local plr = game.Players:GetPlayerFromCharacter(hitPart.Parent)
	if hit.Parent.ClassName ~= ("Tool") and hit.Parent.Name ~= ("Workspace") and humanoid and  hit.Parent.Name ~= ("Soldier")  not plr then
	        swoosh:stop()
			local distance_factor = partDistance / explosion.BlastRadius    -- get the distance as a value between 0 and 1
	        distance_factor = 1 - distance_factor
	if hit.Parent.ClassName ~= ("Tool") and hit.Parent.Name ~= ("Workspace") and hit.Parent.Name ~= ("Soldier")                -- flip the amount, so that lower == closer == more damage **HERE**
	        humanoid:TakeDamage(maxDamage*distance_factor)   **HERE**
	else				**HERE**
			explosion = Instance.new("Explosion") HERE
			explosion.DestroyJointRadiusPercent = 0 **HERE**
	end   -- 0: no damage; 1: max damage
	elseif hit.Parent.ClassName ~= ("Tool") and hit.Parent.Name ~= ("Workspace") and plr and plr.TeamColor ~= game.Teams.Enemies.TeamColor then
			swoosh:stop()
			explosion = Instance.new("Explosion")
			explosion.DestroyJointRadiusPercent = 0
	end
end)