In a hangar in the industrial zone of the city of Zaporizhzhia, welders work around the clock, aiming to repair and modernise S-60 anti-aircraft artillery systems that date back to the soviet era. The weapons were transferred to the Zaporizhzhia craftsmen from a warehouse of the Armed Forces of Ukraine. In a week of work, the weight of the weapons has reduced from five tons to two, and they now take half as long to deploy into a combat position. IMAGES AND SOUNDBITES