(CNN) An air traffic controller is being hailed as a hero following a devastating earthquake and tsunami in Indonesia that killed hundreds of people.

Indonesian solders were on hand in full uniform Saturday to carry the coffin of Anthonius Gunawan Agung.

The 21-year-old did not budge from his post in the control tower at Mutiara SIS Al-Jufrie Airport Palu as it began to shake from a 6.1 magnitude tremor, followed by a 7.5 magnitude earthquake on Friday.

Telah wafat saat menjalankan tugasnya sebagai personel layanan navigasi penerbangan, Saudara Anthonius Gunawan Agung, Air Traffic Controller (ATC) AirNav Indonesia Cabang Palu pada Sabtu (29/09).#RIPAgung #DoaUntukSulteng#PrayforDonggala #PrayforPalu pic.twitter.com/6Wpobp3R7m — AirNav Indonesia (@AirNav_Official) September 29, 2018

As his colleagues evacuated the building for safety, Agung stayed behind to ensure that a Batik Air flight had taken off safely.

As the plane became airborne, Agung, believing the tower would collapse, jumped from a fourth floor window. He was rushed to hospital with internal injuries and a broken leg.

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