Deep in a military bunker outside Seoul, two air force colonels sit shoulder-to-shoulder. One is American, the other South Korean.
Together, their eyes scour satellite pictures of North Korea, played out on giant screens at the front of the dark room. The images are one of many sources of intelligence fed into the classified vault.
“We have the ability to detect the instant a North Korean missile gets off the ground,” explains Col Anthony Kuczynski, who runs the operation centre for the US side.
