Roadblock: Ride a bobsled down a hill in under 4:00, while collecting 7 letters that will spell out a famous Russian writer..... Chekhov (Nuclear Wessels!)Soul Sisahs and Christie/Jodi both have made it to the Roadblock, after refusing to use the U-turn....
Everyone from the second flight went Stack, and just about all of them have seen their stack fall, fortunately not toward the previous stack......
Mark/Michael got really, really lost looking for Construct.
Mel/Mike have just given up and are heading for Construct......