it is my privilege to introduce our speaker sarah wagner and christmas. professor wagner is associate professor of an apology at george washington university he received a ba from dartmouth. a phd from harvard. her research focuses on post conflict national identity and forensic science in the wake of war. she's the author of to know where she lies, dna technology and the search for ships missing an ethnographic study of the forensic and memory practices in response to genocide published by the university of california press in 2008 and the co-author in the aftermath of genocide, published in 2014 by cambridge university press and today she will be speaking on her new book what remains: bringing america's missing home fromthe vietnam war published by harvard university press . sarah, the room is yours. >> thank you so much and first of all my thanks to christian, to eric and chris mcdermott for being here as well as as christian mentioned the people behind the scenes, both peter and especially rachel for getting the logistics and allowing us to be together