Can't remember whether it's Phoenix or Yuma, but one of those airports has two parallel runways, so sometimes on final you see a plane flying closer and closer to yours until eventually they set on parallel courses and land each on their designated runway.
But of course, when you don't know about the parallel runways, seeing another aircraft getting close like that tends to attracts your attention.
The second time I flew there (Soutwhest) I was with my girl friend, who wasn't really fanatical about planes and flying..
And as we're on final approach she spots the other aicrfat closing in..
Her (Worried voice): "What's he doing??"
Me: "Well you see, dear this is the Wild West. They're all sort of cowboys here, so we're actually trying to beat the other guy to the runway"..
Her (after finally noticing the two runways): "you're an
hole.."'
A flight attendant, sitting nearby : "I agree..."