A turbine section of a gas turbine engine, the turbine section comprising: a turbine case shaped to surround a central axis of the turbine section; a carrier segment comprising metallic materials and extending partway around the central axis, the carrier segment including a main body coupled to the case, a forward shield mount arranged along a forward side of the main body, and an aft shield mount arranged along an aft side of the main body; a vane assembly including a support spar comprising metallic materials, the support spar coupled to the main body of the carrier segment and extending radially inward from the main body of the carrier segment toward the central axis; a turbine wheel, located downstream of the vane assembly, including a disk mounted for rotation about the central axis and a plurality of blades coupled to the periphery of the disk for rotation therewith about the central axis; a turbine shroud located co-axially with and radially outward of the turbine wheel to block gases moving along the primary gas path from moving over the blades of the turbine wheel without interacting with the turbine blades, the turbine shroud including a turbine shroud portion of the carrier segment; and a heat shield comprising ceramic matrix composite materials included as part of the vane assembly and the turbine shroud, the heat shield formed as a one piece component that is shaped to include (i) a vane portion having an outer platform and an airfoil that protect the support spar of the vane assembly, (ii) a seal segment portion that protects the turbine shroud portion of the carrier segment so as to provide the vane assembly and the turbine shroud without a gap between the outer platform of the vane assembly and the turbine shroud, and characterized in that the heat shield is shaped to further include: (iii) a forward turn-up extending radially outward from a forward edge of the outer platform and an aft turn-up extending radially outward from an aft edge of the seal segment portion; whereby the forward and aft turn-ups (74, 84) of the heat shield are configured to engage with and couple to the forward and aft shield mounts (36, 40) of the carrier segment, respectively. a turbine case shaped to surround a central axis of the turbine section; a carrier segment comprising metallic materials and extending partway around the central axis, the carrier segment including a main body coupled to the case, a forward shield mount arranged along a forward side of the main body, and an aft shield mount arranged along an aft side of the main body; a vane assembly including a support spar comprising metallic materials, the support spar coupled to the main body of the carrier segment and extending radially inward from the main body of the carrier segment toward the central axis; a turbine wheel, located downstream of the vane assembly, including a disk mounted for rotation about the central axis and a plurality of blades coupled to the periphery of the disk for rotation therewith about the central axis; a turbine shroud located co-axially with and radially outward of the turbine wheel to block gases moving along the primary gas path from moving over the blades of the turbine wheel without interacting with the turbine blades, the turbine shroud including a turbine shroud portion of the carrier segment; and a heat shield comprising ceramic matrix composite materials included as part of the vane assembly and the turbine shroud, the heat shield formed as a one piece component that is shaped to include (i) a vane portion having an outer platform and an airfoil that protect the support spar of the vane assembly, (ii) a seal segment portion that protects the turbine shroud portion of the carrier segment so as to provide the vane assembly and the turbine shroud without a gap between the outer platform of the vane assembly and the turbine shroud, and characterized in that the heat shield is shaped to further include: (iii) a forward turn-up extending radially outward from a forward edge of the outer platform and an aft turn-up extending radially outward from an aft edge of the seal segment portion; whereby the forward and aft turn-ups (74, 84) of the heat shield are configured to engage with and couple to the forward and aft shield mounts (36, 40) of the carrier segment, respectively. (iii) a forward turn-up extending radially outward from a forward edge of the outer platform and an aft turn-up extending radially outward from an aft edge of the seal segment portion; whereby the forward and aft turn-ups (74, 84) of the heat shield are configured to engage with and couple to the forward and aft shield mounts (36, 40) of the carrier segment, respectively.