After months of back and forth sorting vehicle traffic, docking ports, cargo allocations and crew rotations, NASA is zeroing in on a solidified flight manifest for its upcoming crewed launches to the International Space Station (ISS).
Station traffic has been steadily increasing over the past several years, with rotations of SpaceX crew and cargo Dragon capsules joining the regular ferry of Russian Progress and Soyuz spacecraft, Northrop Grumman's Cygnus cargo vessel and, most recently, Boeing's Starliner vehicle.
