PopSugar has more of Ms. Hill's account...
"I noticed Ms. Adams was in first class, and as I was getting seated, I saw the flight attendant guide the soldier to Ms. Adams's seat. She was no longer in it, but it was pretty clear that she'd given up her seat for him," Jemele said. "Ms. Adams did it so quietly and quickly that it speaks to her character. And somebody in coach just got a helluva seatmate!"
Today has background on Ms. Adams' Military upbringing...
One of Hill's Twitter followers pointed out that Adams was born on a U.S. military base in Italy and grew up on a base in Colorado.
A representative for the actress has not yet responded to TODAY.com's request for comment — and Hill didn't want to bother the sleeping serviceman during the flight.
ABC News adds...
After the switch was made, Adams, 39, met with the soldier briefly and privately by the cockpit, Hill added. The actress, whose father was in the U.S. military, then went back to her new seat in coach.