Former US President George Bush parachutes his way to 90th birthday celebrations
Mr Bush, who can no longer use his legs, floated to the ground in a parachute
The 41st president jumped out of a helicopter while harnessed to a retired member of the army's parachute team.
Mr Bush, who can no longer use his legs, could be seen floating to the ground using a red, white and blue parachute.
A spokesman said he landed safely and softly, out of the sight of reporters.
Mr Bush made good on a promise from five years ago, when he also celebrated his birthday by skydiving.
The first time Mr Bush jumped from a plane was when his aircraft was shot down during the Second World War over the Pacific.
"It's a wonderful day in Maine - in fact, nice enough for a parachute jump," he announced on Twitter.
The announcement was kept secret until the last minute, partly to give Mr Bush himself the option of changing his mind.
Spokesman Jim McGrath said Mr Bush likes both a surprise and an adrenaline rush.
"It's vintage George Bush," he said. "It's that passion for life. It's wanting to set a goal, wanting to achieve it. I'm sure part of it is sending a message to others that even in your retirement years you can still find challenges."
"He had a big smile for the crowd. You could tell he was exhilarated," said Diana Untermeyer, a family friend.
Witnesses said he was greeted with a hug and a kiss from his wife, Barbara, and a hug from his son George.
The family left the landing zone without talking to reporters nearby.
Hundreds of people gathered on the rocky coast to get a glimpse of the jump.