Speculating on who is safe after leg 1 based on process of elimination:
m/f black team w/ red backpacks
m/f black team w/ blue backpacks
m/m young fit team w/blue packpacks
f/f young fit team w/ blue backpacks
m/m fat guys team w/black backpacks
m/f couple w/ burgundy backpacks
f/f middle eastern purple team
m/f father/daughter team
m/f older couple team (green/khaki? backpacks)
2 teams unaccounted for. (im assuming its 11 teams and not 12)
m/f hippie team
m/m purple team
Proof:
At Toronto Airport headed to Santiago, Chilehttp://i.imgur.com/RMJqxW9.jpgShows m/m blue team
http://i.imgur.com/RMJqxW9.jpg f/f purple, m/f black red team
http://i.imgur.com/ajtxRdT.jpgm/f red team
http://i.imgur.com/Iwqv6sy.jpg m/f father-daughter
http://i58.[banned image hosting site].com/3508pk2.jpg
shows m/f black red team and m/f blue black team doing the dancing Chile task
http://i61.[banned image hosting site].com/15f3t5s.jpg
m/f father daughter asking for directions in Chile
Santiago Airport headed to Buenos Aires, Argentinahttp://i.imgur.com/St7bLGt.jpgm/f older couple
http://i58.[banned image hosting site].com/vg7cb6.jpg
f/f blue team and m/m fat guy team
http://i60.[banned image hosting site].com/2llk8zl.jpg
m/f red black team
http://i60.[banned image hosting site].com/witu88.jpg
m/f red team