TOP_SPEED = 500
function GM:SetupMove(ply, mv)
	if not ply:Alive() then return end
	if ply:KeyDown(IN_SPEED) and ply:GetModel() == "models/player/police.mdl" then
	
		ply.Velocity = ply:GetVelocity()
		
		local additive = ply:GetVelocity()
		additive.x = math.Clamp(additive.z,-300,300)
		additive.y = math.Clamp(additive.z,-300,300)
		additive.z = math.Clamp(additive.z,-100,100)
	
		ply.JetPack:EmitSound(JetSound,100,math.random(150,155))
	
		ply.Velocity.z = math.Approach(ply.Velocity.z, TOP_SPEED, 5)
		
		mv:SetVelocity( additive + ply.Velocity + (ply:GetAimVector() * (ply.Velocity.z/3)))
		
		local edata = EffectData()
		edata:SetOrigin(ply:GetPos() + (ply:GetForward() * -10))
		util.Effect("jetpack_smoke", edata)
	else
		ply.Velocity = math.Approach(ply.Velocity or 1000, 10, -5)
	end
end