(a) The bonds may be additionally secured by a mortgage, deed of trust lien, or security interest in a designated control facility of the governing body and all property and rights appurtenant to the control facility.
(b) The mortgage, deed of trust lien, or security interest may give the trustee the power to operate the control facility, sell the control facility to pay the debt, or take any other action to secure the bonds.
(c) A purchaser at a sale under a mortgage or deed of trust lien is the absolute owner of the control facility and rights purchased.