Battling Under a Canopy of Russian and Ukrainian Drones

Members of Ukraine's 1st Separate Assault Battalion describe themselves as firemen. Their job is to rapidly deploy to areas along the front that are in danger of collapse. Lately, their service has been in high demand: the front is burning. A large-scale counter-offensive last year failed to achieve meaningful victories, and since then Russia has been on the attack. One of its priorities appears to be Kupyansk, a city in northeastern Ukraine, some twenty miles from the Russian border.