fantom, which accounts for the fact that we now use aluminium poles for the strafe targets despite the cost. A marksman however would shoot the shackles which of course were steel.
We acquired some Scimitars as targets and it was deemed that the 30mm aluminium 'armour' was soft as far as the Aden was concerned. A USAFE F15 engaged one (natural target really) and we never found the lid.