A temporary break from New Horizons to Pluto today.
All 4 are veteran astronauts having flown in space previously and will use their collective experience to help finalize the spacecraft and prepare and train for their flights. This marks the first flight assignment for U.S. astronauts to fly into space on U.S. spacecraft since the space shuttle was retired in 2011.
Boeing's CST-100 is slated for the 1st flight.
This is a VERY big step indeed for NASA's return to using American hardware for manned spaceflight.
Sky Guy in STILL Cloudy VA