Indonesian security forces help a firefighter (R) spray water on a peatland fire in Kampar, Riau province, on the Indonesian island of Sumatra, September 15, 2015. A worsening haze across northern Indonesia, neighbouring Singapore and parts of Malaysia on Tuesday forced some schools to close and airlines to delay flights, while Indonesia ordered a crackdown against lighting fires to clear forested land. REUTERS/YT Haryono