The agency, which is well known for its high-profile duties protecting the president and other dignitaries, is one whose internal operations are largely hidden by a secretive culture.

And many feared that the firm's insular, secretive culture would be lost.

It also promises to change the famously secretive corporate culture of Nintendo, though only slightly; Nintendo refused repeated requests for interviews with its executives.

Exploring the secretive Zoroastrian culture in Yazd.

We're a secretive culture.

But celibacy has given rise to a secretive culture in which sexual behavior in any form must be hidden.

After the suits were filed, a new openness emerged in what many had considered a closed, even secretive culture at Marriott, which was founded in 1927 as a family business.

Although Westerners often point out that the Russian language has no word for privacy, it can in fact be one of the world's most secretive cultures.

Current and former employees say the military's hierarchical and secretive culture dampens the freewheeling inquiry needed for scientific research to flourish.

But Google, which prides itself on its quirky and secretive corporate culture, appears prepared to drag out any public offering as long as possible.