The contestants are attempting to make fire and Sam is talking to the camera giving an update. While he is talking, in the foreground you can see flames of a well established fire flickering up in front of Sam. However in the next shot Daniel is still using his glasses in an attempt to make the fire start.
The 14 contestants have to cross a bog to get to the camp, and Neeko falls. But in later scenes, only Johnny's jeans appear at all dirty. Neeko's red shirt is clean. When they are trying to start a fire, it's clear that Daniel's jeans and George's tan pants are clean.