From the WashTimes:

The second passenger, a frequent business traveler who asked not to be identified, provided a copy of her itinerary confirming she was on the June 29 Northwest Airlines Detroit-to-Los Angeles Flight 327...

The passenger, who was riding in first class, said the constant foot traffic and strange behavior she witnessed in the front cabin frightened her as much as it did Annie Jacobsen...

"I thought I was going to die," the second passenger told The Washington Times...

...[She] said the men were "up and down the aisles of the plane the entire time," and that one of the men pushed other passengers as he rushed toward the front lavatory. She said the man did not appear to be ill, and remained in the lavatory during her entire meal...

"There was more activity up and down the aisle through first class than I have ever experienced on any flight, including international flights," the second passenger said. "The most unusual part was that the flight attendants seemed to ignore what was going on..."