Crews are again preparing for NASA’s next Boeing Starliner crewed launch attempt, which is now slated for no earlier than next Friday, May 17th. After a scrub due to a liquid oxygen tank valve issue, technicians will replace the valve. The launch will carry NASA astronauts Suni Williams and Butch Wilmore to the International Space Station. United Launch Alliance President Tory Bruno likened the valve to a radiator cap.