At NASA’s Kennedy Space Center, crews will work through the weekend to connect two anhydrous ammonia bottles to shuttle Discovery using quick disconnect lines to service the spacecraft’s ammonia boiler system. The ammonia boiler system is used on the runway prior to ground cooling and supports an emergency return and landing at Kennedy in the unlikely event it is needed. At NASA’s Johnson Space Center, the STS-133 astronauts will take a break from training for the next week. STS-133 is targeted for launch Nov. 1 on a mission to the International Space Station.