Our investigator arrived on the scene after 4 p.m., so he...

Our investigator arrived on the scene after 4 p.m., so he had only about an hour of daylight left. Most of the work he will need to do in the immediate future is examine the wreckage. I am sure that is what he is doing today. He will examine the wreckage, draw diagrams and interview any eyewitnesses to the crash. Incidentally, he will be drawing upon the maintenance records of the plane.