While threats of a missile launch have renewed tensions with North Korea, photojournalist David Guttenfelder has returned to continue documenting life there. As the world watches to see what North Korea’s next move will be in a high-stakes game of brinksmanship with the United States, residents of its capital aren’t hunkering down in bunkers and preparing for the worst. Instead, they are out on the streets en masse for the birthday of national founder Kim Il Sung — the biggest holiday of the year. U.S. Secretary of State John Kerry delivered a stark warning to North Korea on Friday not to test-fire a mid-range missile, while rejecting a new U.S. intelligence report suggesting significant progress in the communist regime’s nuclear weapons program. North Korean children hold up red scarves to be tied around their necks during an induction ceremony into the Korean Children's Union, the first political organization for North Koreans. North Korean soldiers stand together along a street in Pyongyang. North Koreans dance together beneath a mosaic painting of the late leader Kim Il Sung during a mass folk dancing gathering in Pyongyang Thursday, April 11, 2013, to mark the anniversary of the first of many titles of power given to leader Kim Jong Un after the death of his father Kim Jong Il.