at.getAmmoType() == T_PXLRM || at.getAmmoType() == T_MRM_STREAK ||
    public static boolean canClearMinefield(AmmoType at) {        if (at != null &&            (at.getAmmoType() == T_LRM ||             at.getAmmoType() == T_TBOLT20 ||             at.getAmmoType() == T_EXLRM ||             at.getAmmoType() == T_MRM) &&            at.getRackSize() >= 20 &&            at.getMunitionType() == M_STANDARD) {            return true;        }        return false;    }