Hung is currently a Donald M. Payne Fellow at the United States Agency for International Development (USAID), a United Nations Environment Programme (UNEP) Global Environment Outlook Fellow, and a Youth Advisor for the United Nations Human Settlements Programme (UN-Habitat). He is a former Regional Contributor to UNEP's "Global Environment Outlook", focusing specifically on the urban lens, and is an editor of the upcoming UN-Habitat "Cities of Youth: Cities of Prosperity" report and a contributor to its "State of the Urban Youth 2016/2017" report, along with a Working Paper on legislative frameworks on youth rights. He just recently co-authored a paper on the California drought in the Journal of the International Society for the Prevention and Mitigation of Natural Hazards. He has been a moderator for a My World 2015 consultation on “disadvantaged children and young people living in urban areas”, Lead Focal Point of the UN Open Working Group topic of “sustainable human settlements”, and Facilitator at an Urban Lab session on participatory governance at the NYC Urban Thinkers Campus. In 2014, he was invited by the Youth Ministry of Sri Lanka to attend the World Conference on Youth as an International Facilitator for the theme of “Environmental Protection, Emergency Preparedness, and Youth-centered Urbanization.” Since then, Hung has been a speaker at High-Level UN panels and member of many UN Expert Working Groups. He was the recipient of the Nebraska Governor’s Points of Light Award in 2013 and is a Nebraska Admiral, the highest civilian honor in the State of Nebraska.