That reminds me of a fun anecdote that I'm sure you'll be positively dying to not find out about.
Right at the final moments of the game, you launch your assault on the Jefferson Memorial. Normally, for some reason, the game only released Sarah Lyons into the fray. Well just this once, the rest of the Lyons Pride actually came along. I had worried they'd all get massacred, but no, they had that unconscious invincibility.
Then we travelled through a mass of cars. One bazooka shot from the Enclave troops firing desperately at Prime went astray. It shot behind me, and I thought little of it. But it must've struck a vehicle, because there was an almighty explosion and I jumped for safety. I didn't clear the blast fully and my character was crippled rather badly. Radiation abounded, and I turned grimly behind me to find that all that remained, in this mass of shattered vehicles, of the Lyons Pride was the unconscious figure of Sarah Lyons.
I found no trace of any of the other members of the Lyons Pride, not even weapons, and none were back at the Citadel when I continued the game via Broken Steel. It is quite possibly the single most mysterious thing that has ever happened to me in my long gaming career.