Ned Calmer broke into an orchestra broadcast originating from Hollywood at 12:48am:
"We are interrupting this program to bring you a special bulletin."
But they were on the story.
At that early hour, Ed Murrow was among the American newsmen sequestered in the basement of Supreme Allied Headquarters, being briefed on what was happening.
All of them were sworn to secrecy. No one at CBS in New York knew.