On Dec. 20, 20 young people, ranging in age from 14 to 18, received certificates of citizenship, designating them as U.S. citizens. Each had a parent naturalize, and received their citizenship through that act.
When a parent naturalizes, each of his or her children below age 18 automatically becomes a citizen, too.
This event was at Klondike Gold Rush National Historical Park. It was held in honor of the 100th anniversary of the National Park Service.