Payloads Combustion Integrated Rack/Advanced Combustion via Microgravity Experiments (CIR/ACME)/BRE-2: The crew exchanged a 40% oxygen/60% nitrogen bottle at the manifold 2 location for a new bottle with the same composition. They also replaced the ethylene manifold 4 bottle with a methane bottle, but were not able to open the bottle valve. CIR powered ops for …







