You might recall on episode 2 that Rachel had a fall during the elimination. Some might think it was planned but it really did happen. The eliminations at the beginning are long - you only maybe see about 10 minutes in the edit but they go on for hours as each judge has a moment to to give feedback - with long standing time and perhaps combined with the heat of the lights Rachel passed out for a moment. It was such a surprise to all of us on the judging panel that Adam jumped up quickly sending is rolling chair flying back and off the stage like a rocket. Little behind the scenes things you don't get to see in the final episode