This is the sort of stuff that drives me nuts. The CT factoid that the power in the TSBD mysteriously went out just before the shots were fired has been repeated at the Other Forum as recently as today (by your CT hero and mine, David Josephs).

The source, of course, is Geneva Hine. Josephs interprets her WC testimony as referring to a "power outage" in the TSBD. Let’s look at what she actually said. It’s pretty clear, yet these factoids persist like cockroaches.
Hine told the other women in her office that she would stay behind and
answer the telephone so they could go outside and watch the motorcade:
“You see, I had seen him [JFK] on two different occasions and I had been very close to him and so they were lamenting that they couldn’t go out so I spoke up and said ’I will be glad to answer the telephone so you girls may go out and see the motorcade’ and I had previously answered the telephone when we were in the other building before we moved in this building, so they were delighted and I thought nothing about it.”She then explained that there was no switchboard but rather a telephone with
a bank of lights for multiple lines. When Otis Williams went out to watch the motorcade, she was left alone and had to shift to another desk to answer the phone. The
lights on the phone all went out “because no one was calling,” and she then felt it was safe to go over to the window and watch:
Mr. BALL. Did you have to change your desk over to another desk?
Miss HINE. Yes, sir; to the middle desk on the front row.
Mr. BALL. Was there a switchboard?
Miss HINE. No, sir; we have a telephone with three incoming lines, then we have the warehouse line and we have an intercom system.
Mr. BALL. You don’t have a switchboard?
Miss HINE. Not now; we did in the other building.
Mr. BALL. Were you alone then at this time?
Miss HINE. Yes.
Mr. BALL. Did you stay at your desk?
Miss HINE. Yes, sir. I was alone until the lights all went out and the phones became dead because the motorcade was coming near us and no one was calling so I got up and thought I could see it from the east window in our office.
Mr. BALL. Did you go to the window?
Miss HINE. Yes, sir.Business phones with multiple lines had been in use since the 1950s. They did not go “dead” when the power went out because the central office of the phone company had its own backup power. Hine simply meant there were no incoming calls and she didn’t think there would be any during the motorcade, so she walked over to the window.
If that isn’t sufficient for you, immediately following the shooting Hine frantically banged on the door of Southwestern Publishing but the woman in that office wouldn’t answer because she was
talking on the telephone:Miss HINE. And there was a girl in there talking on the telephone and I could hear her but she didn’t answer the door.Moreover, the
lights on the phone in her own office then immediately started blinking due to a high volume of incoming calls:Miss HINE. Yes; and I went straight up to the desk because the telephones were beginning to wink; outside calls were beginning to come in.
Mr. BALL. Did they come in rapidly?
Miss HINE. They did come in rapidly.Have I killed this cockroach once and for all?
Noooooo ...
