You can only have 4 people on the Air France 777s. The 4 seats in the cockpit are the only ones with 'real' O2 masks. In the courier area the O2 masks are the pax carrier dixie cups. So, on a double crewed flight, the Feds don't get to participate.

I have also heard that the dixie cup masks will be changed out to the "normal" masks.

MG2