Sasha, Malia take first trip on Marine One as family heads to Camp David

The Washington Times describes the departure:

The Obamas were joined by Michelle's mom, Marian Robinson, and an unidentified young friend of Sasha's. Lucky friend. ...

Malia walked out at the rear of the Obama family and appeared bashful. Her father, after making his brief remarks striding by the cameras, noticed her walking with her head down and put his arm around her as they walked the 50 or so feet to the helicopter.

It was the first flight on the presidential helicopter for Mrs. Obama and the two young girls. Mr. Obama made his first trip on board the aircraft Thursday on the way to speak to House Democrats in Williamsburg.

And it's the first time for the Obama family at Camp David, a presidential retreat in the Catoctin Mountains near the Maryland-Pennsylvania border. President Franklin Delano Roosevelt first used the retreat, and President Eisenhower named it Camp David in honor of his grandson.

Related: Former White House usher says every first family has to adjust to life 'in the fishbowl' (CBS)