Because he was concerned that the writer not get caught in the building mess .Because he knows the writer 's normal route .Because he has learned to associate the writer 's voice with the writer .None of the above choices .
What 's a possible reason he recognizes the writer 's voice ?
He recognizes my voice and knows my normal route , and he was concerned that I not get caught in the building mess -- a mess he was still gathering data on . There were several pauses while he listened to the Alexandria Fire Chief on the scanner . By the time we had extracted what value we could from that conversation , I was getting on the beltway at Telegraph Road .