Runway Incursion-Near Miss In Florida

This story I saw on yesterdays news has be a bit perplexed. Why is it
that the crew of the landing aircraft never saw the encroaching
aircraft before the controller spotted the near disaster and warned
them to execute a missed approach. With two heads in the cockpit, I
assume the pilot was flying the approach, wouldn't to copilot be
constantly scanning the instruments and double checking the runway for
objects on or near the runway that might pose a problem?

I had a commercial airliner pull onto the active runway as I was on
short final...the controllers quickly advised the errant pilot to hold
in place, they just pulled in front of a landing aircraft. I quickly
adjusted my approach to land well down the runway.

Fortunately I was sitting beside a flight examiner who acted as my
second set of eyes. He was surprised at my calm and decisive reaction.
This wasn't a check ride, but we worked as a team during the whole
flight. Constant situational awareness is a MUST as is teamwork in the
cockpit. Poor crew coordination was the blame for the recent C-5B
crash...both heads down, no one looking out the window to really see
how low and short they were.

Oh, the examiner quickly got on the second radio and had a very
personal chat with the crew of that airliner. Needless to say if the
passenger could have been privy to the conversation they would have
exited the aircraft.