Understand, I have never flown a 777. During the time I was flying, I was certified up to an Embraer 190. I was afforded the opportunity to fly a 767 sim several years ago. There is not that much difference in management of a visual approach glide slope and approach speed...even without PAPI My first private instructor called it "Poppy Lights"...if you see 4 red poppies on final you will be pushing up poppies from your grave. One just needs to know the approach plates. .recommended glide scope, approach speed, runway length, altimeter, BP, temp, wind, (weather) and the weight/balance of your ship.
It seems this pilot in control, in training, was not well supervised by his trainer. Just MYHO.
Fantastic response by responding firefighters, police, and passengers helping their fellow passengers. Kudos to all!