The first of what could be a bunch of videos from passengers on board the NY-Vegas flight that landed in Amarillo, Texas after the captain had some sort of breakdown. An off-duty captain entered the cockpit and took over. When the plane landed, the captain was taken to a nearby medical facility. Video doesn't show much except for a number of passengers huddled near the front. Here's a NYT post.
Here's what seems to be a good account from one of the passengers, a former Fox anchor: