The Singapore flag is raised as performers sing the national anthem during opening ceremony of the 28th SEA Games Singapore 2015. (Reuters Photo/ Singapore SEA Games Organising Committee)

The Singapore flag is raised as performers sing the national anthem during opening ceremony of the 28th SEA Games Singapore 2015. (Reuters Photo/ Singapore SEA Games Organising Committee)

Fireworks light up the National Stadium during the opening ceremony of the 28th Southeast Asian (SEA) Games in Singapore June 5, 2015. (Reuters Photo/Edgar Su)

Fireworks light up the National Stadium during the opening ceremony of the 28th Southeast Asian (SEA) Games in Singapore June 5, 2015. (Reuters Photo/Edgar Su)

Fireworks light up the National Stadium during the opening ceremony of the 28th Southeast Asian (SEA) Games in Singapore June 5, 2015. (Reuters Photo/Singapore SEA Games Organising Committee)

Performers attend the opening ceremony of the 28th Southeast Asian Games (SEA Games) in Singapore on June 5,2015. (AFP Photo/Sajjad Hussain)

Performers dance during the opening ceremony of the biennial Southeast Asian (SEA) Games in Singapore’s National Stadium on June 5, 2015. (AFP Photo/Roslan Rahman)

SEA Games mascot “Nila” is seen at the opening ceremony of the biennial Southeast Asian (SEA) Games in Singapore’s National Stadium on June 5, 2015. (AFP Photo/Roslan Rahman)

Athletes from Indonesia march during at the opening ceremony of the biennial Southeast Asian (SEA) Games in Singapore’s National Stadium on June 5, 2015. (AFP Photo/Roslan Rahman)

Dancers perform during the opening ceremony of the biennial Southeast Asian (SEA) Games in Singapore’s National Stadium on June 5, 2015. (AFP Photo/Roslan Rahman)

A performer flies through the air as she takes part in the opening ceremony of the 28th Southeast Asian Games (SEA Games) in Singapore on June 5, 2015. (AFP Photo/Sajjad Hussain)

Performers take part in the opening ceremony of the 28th Southeast Asian Games (SEA Games) in Singapore on June 5, 2015. (AFP Photo/Sajjad Hussain)

Performers take part in the opening ceremony of the 28th Southeast Asian Games (SEA Games) in Singapore on June 5, 2015. (AFP Photo/Sajjad Hussain)

A performer flies through the air as she takes part in the opening ceremony of the 28th Southeast Asian Games (SEA Games) in Singapore on June 5, 2015. (AFP Photo/Sajjad Hussain)

Performers take part in a routine at the opening ceremony of the biennial Southeast Asian (SEA) Games in Singapore’s National Stadium on June 5, 2015. (AFP Photo/Roslan Rahman)