He was appointed to a two-year term as Chief of Staff of ROKAF in October 2005. He resigned in March 2007 after a KF-16 fighter jet crashed due to maintenance failures. He was also facing criticism for having played golf during a national day of mourning for Yoon Jang-ho, a soldier who was killed in Afghanistan.Lee, Brian (2007-03-27). . JoongAng Daily. Retrieved 2010-12-17.Yoo Jee-ho (2009-04-01). . JoongAng Daily. Retrieved 2010-12-17.