Depends on whether there already was a freight or two behind 6 on those 4 miles.
There was one time when a tree fell and blocked the line in front of us on the CZ. Our resourceful Conductor, who for some reason had a chain saw among his bizarre collection of equipment on board, took it out and cut down the tree and cleared the track in the middle of the night, and we were soon on our way. The dispatcher was completely floored when he heard the Conductor say that he had just pulled out his chain saw and was proceeding to remove the tree trunk.
Given the frequency that fallen trees or large branches block the tracks on the LD routes, perhaps having a chain saw on board should be standard support equipment. Of course, this only works for trees that are small enough that the Conductor and the on board crew can cut it and remove it without much difficulty. Large trees would require heavier equipment and a truck to drag the tree trunk off of the tracks.
Since there have been several trains with long delays due to fallen trees in the past several weeks, it would be interesting to find out how many times in the course of a year are Amtrak trains off of the NEC delayed by fallen trees or branches as a specific cause of delays.