Every leg has a simple what-if scenario that will eliminate them. I'm glad they're lucky enough to stay… in the bottom.
Leg 1: What if it was an elimination leg?
Leg 2: What if they were on the 3rd or 4th flight?
Leg 3: What if Zach & Rachel and Cameron & Darius didn't make mistakes?
Leg 4: What if Jessica & Brittany made it with the rest?