relief effort is growing. cbs' chris livesay reports. >> reporter: it's a fundamental principle of conflicts: infantry wins battles, but logistics wins wars. here in lviv, ukraine, truckloads of water, food, clothing, toilet paper are packed, sorted, and loaded by an army of volunteers. less than two weeks ago, this building was ukraine's biggest arts complex and yuri popovich was just a software engineer. >> seeing russianing bombing kindergartens, child hospitals, wild animals don't act like this. this, like, devil walking on the ground. >> reporter: today, he's coordinating a massive relief effort for ukraine's worsening humanitarian crisis. 28-year-old driver mykhailo, is also helping by take his big rig deep into eastern ukraine. "i'm a bit worried," he says.