Guess I will weigh in as one of the old fogies...
I was at Station 10, everyone was outside still doing rig checks, I came inside to grab some paperwork and we always had the news on in the station. I saw the reports of the first impact and watched the second...I was too mesmerized to say anything. When the seriousness of it dawned on me, I stuck my head out the bay door and told everyone to come inside now...they sensed the urgency and piled in.
We then started dialing, notified HQ, other stations...not many had heard yet. We then went into full station lock down (county wide) and the DMAT team was put on standby ready to deploy.
Remainder of the day was somber and filled with news watching. Ironically, 911 calls were few that day, which in retrospect seems odd. Were people delaying or not calling 911 due to being engrossed in live news coverage?