Sergeant Oleksandr Yatsenko was killed on the Vovchansk front on July 20, 2025, according to a statement from AT "Ukrainian Energy Machines," where the deceased worked before mobilization. Yatsenko had worked at the enterprise for over 20 years, progressing from a boring turner to head of the hydro-turbine shop section.

The statement detailed Yatsenko's career at the plant, noting his progression from a boring turner to head of the hydro-turbine shop section. He received several awards for his service, including a letter of appreciation from the general director in 2015, from the head of the regional council in 2016, and the "For Merit" badge in 2019. Yatsenko was a participant in the ATO and was mobilized into the Armed Forces of Ukraine (ZSU) in March 2022, receiving the medal "Defender of the Fatherland."