This photo is of the North Korean guards inside one of the blue buildings. I had been in this exact room a few weeks prior, and in addition to the South Korean guards, there were also North Korean guards. However, the tone was completely different from the Northern guards. When I visited from the south, the North Korean guards wore completely different uniforms, with large korean letters on their helmets, imposing dark RayBan sunglasses, and an extremely stern, tense pose. This time, the guards were upbeat and friendly, and there was no sign of any guards from the south.