For what it is worth, my son reported hearing a series of unusual
"lightning stroke" sounds on the AM Broadcast band, just below 1000 Khz
just as Columbia began its re-entry. He is located on Cape Cod in Eastern
Massachusetts on the coast and there were no reports of lightning anywhere
on the East Coast at that time. His location is 1500 miles from Texas. Maybe
just a coincidence but he has not heard that type of sound before; they
were so unusual that he became curious and tuned to a station to find out it
"anything" had happened and heard that Columbia had just lost contact.