Billy Lynn's Long Halftime Walk gathers paceAng Lee’s new project, Billy Lynn’s Long Halftime Walk, is one we’ve got our eyes on. The Oscar-winning director, a darling of the Academy, is quietly assembling an intriguing cast for his take on Ben Fountain's zeitgeisty novel. Kristen Stewart, fresh from an attention-grabbing turn in Still Alice, looks like being the next to join Steve Martin and Garrett Hedlund in Lee’s ensemble.The story flashes back and forth between a squad of eight US soldiers, the titular Billy Lynn (British newcomer Joe Alwyn) among them, sheepishly taking the limelight - and the hero-worship – of Cowboys Stadium during an NFL game at which they’re guests of honour, and their traumatic tour in Iraq.