I have a model named "Tank" in ReplicatedStorage and what I am trying to do is weld that model to every player that joins.

game.Players.PlayerAdded:connect(function(player)
	player.CharacterAdded:connect(function(Character)
		local Humanoid = player.Character:FindFirstChild('Humanoid')
		if Humanoid then
			local head = player.Character.Head
			local torso = player.Character.Head
			local obj = game.ReplicatedStorage:WaitForChild("Tank")
			obj.CFrame = torso.CFrame * CFrame.new(0,10,0)
			local weld = Instance.new("Weld")
			weld.Part0 = torso
			weld.C0 = torso.CFrame:inverse()
			weld.Part1 = obj
			weld.C1 = obj.CFrame:inverse()
			weld.Parent = obj
			obj.Anchored = false
		end 
	end)
end)