Okay, okay, I was feeling a bit grumpy last night.
But, you did phrase the questions rather as if they'd just been copied straight off an exam paper or interview brief. And I defend my point that anybody posting on Pprune should make a bit of effort over their titles.
Perhaps if you'd posted with a title like "hazards on final approach", and said something like "Chaps and Chapesses, a bunch of us over here after a few nasty finals are trying to decide on the most serious hazards, and what we should do to head them off. My kick-off ideas are, but I'd appreciate everybody elses thoughts", you could set an example to those who really are just avoiding doing their own homework, as %mac said.
G