Korean People's Army (KPA) soldiers salute as they ride tanks during a military parade and mass rally on Kim Il Sung square in Pyongyang on September 9, 2018. (Photo: VCG)

Participants wave flowers as they march past a balcony from where North Korea's leader Kim Jong Un was watching, during a mass rally on Kim Il Sung square in Pyongyang on September 9, 2018. (Photo: VCG)

Korean People's Army (KPA) soldiers salute as they ride tanks during a military parade and mass rally on Kim Il Sung square in Pyongyang on September 9, 2018. (Photo: VCG)

Korean People's Army (KPA) soldiers salute as they ride tanks during a military parade and mass rally on Kim Il Sung square in Pyongyang on September 9, 2018. (Photo: VCG)

Participants wave flowers as they march past a balcony from where North Korea's leader Kim Jong Un was watching, during a mass rally on Kim Il Sung square in Pyongyang on September 9, 2018. (Photo: VCG)