LONDON (AP) -- It didn't require much 007 derring-do, but former James Bond actor Roger Moore came to Queen Elizabeth II's rescue Friday, helping out when technical trouble prevented the monarch from unveiling a plaque.

The queen pressed a button that was supposed to open a set of red curtains in front of a Heathrow airport plaque honoring a charity fund-raising program, but nothing happened.

Moore got up from his seat and crouched down to tug at the drapes, which opened on the second try.

"I wasn't meant to be up there but James Bond has got to do something," Moore said later.

The 76-year-old actor and the queen attended a ceremony commemorating the 10th anniversary of a UNICEF-British Airways program that raises money by asking airline passengers to donate coins and bills of any currency.

Moore, who's an ambassador for UNICEF, the United Nations children's agency, was knighted by the queen last year and said it was great to see her again. "I'm a royalist so I'm always thrilled," he said.

UNICEF uses money from the Change for Good program to help children around the world through efforts such as polio vaccinations in Zambia and aid to street children in Mexico. Officials said it has raised more than $30.6 million.

"It brings hope to children who literally have none," Moore said.