Cold winds blow through pine trees and across nearby mountains. On the horizon are guard posts and cameras. There's little movement, except for wildlife.
U.S. Lt. Col. Ed Taylor, lives and works on the Korean armistice line that has divided North and South for almost six decades. He even sleeps in a bed right next to North Korea.
"I cannot compare it to anything I've ever done. And I say that with 23 years in the Army and two deployments to Iraq," Taylor says.
He commands the only combined U.S. and South Korean battalion on the Korean Peninsula. Twenty-four hours a day, 365 days a year, the joint forces watch, anticipate and train for possible North Korean infiltration, unusual movements by the North's Korean People's Army, or defections.
Taylor's troops are South Korea's trip wire, the first of some 28,000 U.S. soldiers in the country to guard against any possible actions by the North.
When "you are standing essentially on a line that's drawn on the ground, and you're looking across at a North Korean soldier who is fulfilling the same duty and standing there looking back across at you, it's a little surreal," Taylor says.
President Obama's Visit
As part of his visit to South Korea for the Nuclear Security Summit with 52 other heads of state Monday, President Obama is paying a visit to the military armistice line that has divided the Koreas.
North Korea's new leader Kim Jong Un made an unannounced visit to the DMZ earlier this month. There have been hopes that the recent change of leadership in North Korea might lead to improved relations. Kim, who is in his 20s, took power three months ago following the death of his father, Kim Jong Il.
Tension is ratcheting up again, however, after North Korea announced a plan for a rocket launch in April. The country says the launch is for scientific purposes. U.S. officials and nuclear experts say the same technology is used to test ballistic missiles.
Nowhere is that tension more acute than at the armistice line.
Taylor, who is always armed and wearing a bulletproof vest when he's near the demarcation line, says the responsibility of his battalion also includes protecting visitors, to ensure they don't provoke the North Korean guards. But he's also witnessed the opposite.
"From the [North Korean] soldiers, they do engage sometimes in immature behavior, throat slashing gestures ... they will, ah, open up their holsters, flip very quickly, to give the impression that they might be thinking of drawing their weapon," Taylor says.
He says his soldiers, all of whom are hand-picked to work on the front line, behave more professionally.
Communications With The North
New Zealand Lt. Ewan Sinclair from the U.N. Command Military Armistice Commission says the DMZ is the only communications link between the U.N. Command and the North's Korean People's Army.
And when the North doesn't want to take the call, the lieutenant says, in the interest of transparency, the U.N. Command has to step outside and use a bullhorn. That was the case recently when he tried to deliver a message about South Korea's live-fire exercises in the Yellow Sea.
"And on these occasions, the Korean People's Army, because they don't want to recognize in principal, the fact that the Republic of Korea has any right to conduct live fire exercises in the Yellow Sea, they refused to accept the message over phone line," Sinclair says.
So the bullhorn came out, and Sinclair shouted the news across the demarcation line.
"Just conducting business as usual, moves at the rate of a glacier," he says. "It's so slow that anytime we try to get business done, it can take upward of two weeks for a simple task."
But that's how life works at the most heavily guarded frontier in the world. North Korea's new leader may be consolidating his power in Pyongyang, but along the armistice line, little has changed in the last 59 years.
Copyright 2012 National Public Radio. To see more, visit http://www.npr.org/.