I have never seen anyone buried in the dark in all my life. Just fitting.
Up to this point the only other burial in Arlington to take place at night was that of Robert F. Kennedy. His mass took place in New York and then his body and a great number of the funeral participants boarded a slow moving train to Washington, and then ther was a motorcade to Arlington. I watched the whole thing on television and remember thinking that they would never get there in daylight. If I remember correctly there was an accident along the way and that slowed things down even more.
I found a reference to the accident in the following account of the funeral train trip.
"The trip from New York to Washington, normally about four hours, took twice as long. Two bystanders who had jumped on the tracks in Elizabeth, New Jersey, were killed by a train passing in the other direction. The food ran out, the water ran out; finally, the liquor ran out. The thousand or so passengers stumbled off the train at Washington's Union Station shortly after 9 p.m., to the booming drums of the Navy Band."
http://www.washingtonpost.com/wp-srv/photo/onassignment/rfk/excerpt.html