Former Secretary of Homeland Security Janet Napolitano has endorsed gay marriage.

Napolitano, the 21st governor of Arizona from 2003 to 2009, made her first public statements in support of allowing gay and lesbian couples to marry during an appearance Sunday on NBC's Meet the Press.

“When you were governor, you opposed same-sex marriage. Have you changed your views on that?” host David Gregory asked.

“Yes. I think like many in political and elective life in the early part of this century, the evolution hadn't occurred, and my statements were very much in that way,” Napolitano answered. “Which is to say that, this was something that society, in a way the arc of history, as it were, needed to get there. And the arc of history has clearly arrived.” (The video is embedded on this page. Visit our video library for more video.)

Napolitano will lead a 10-person delegation to the Winter Olympics in Sochi, Russia next month. The inclusion of three openly gay athletes in the delegation is widely seen as a symbolic protest against an anti-gay law which took effect in Russia over the summer.