 Detailed contingency operations, addressing both repair and preventive maintenance, were prepared in advance for the internally accessible components.Generalized procedures for pinpointing atmospheric leakage in the vestibule have existed since at least ISS Assembly Stage 4A, as have contingency installation procedures for all three sets of IVA seals.Reports of damage to CPA connectors (both on the ground and on orbit) led to the deployment of risk mitigation procedures on STS-126.