Chef José Andrés and his non-profit World Central Kitchen have provided a vital lifeline in disaster areas, serving more than 60 million meals, from earthquake-ravaged Haiti to hurricane-battered Houston. Now they are giving aid in Ukraine, the first time chef Andrés and his people have operated in a war zone. Correspondent Tracy Smith talked with Andrés about his mission; and with director Ron Howard about his new documentary profiling Andrés and his organization, “We Feed People.”