Billy Lynn's Long Halftime Walk: Ang Lee on entering 'unknown territory'
'It's not that different in principal to those boys being thrown into battlefield for the first time' says Lee. 'You feel very vulnerable.'
Billy Lynn's Long Halftime Walk trailer: Kristen Stewart shines in exclusive clip
The Ang Lee drama opens nationwide on Nov. 18
Billy Lynn's Long Halftime Walk: Ang Lee talks new movie
Director, cast discuss the ambitious project at its New York Film Festival world premiere
