Huyen Nguyen and Rebecca Rusch take a selfie along the Ho Chi Minh Trail for the feature film project 'Blood Road' in Vietnam, Laos, and Cambodia in March, 2015. // Josh Letchworth/Red Bull Content Pool // AP-1UD72N2PS1W11 // Usage for editorial use only // Please go to www.redbullcontentpool.com for further information. //