Read this article and answer this question * Presidential Unit Citation , Streamer embroidered PLEIKU PROVINCE * Presidential Unit Citation , Streamer embroidered DAK TO DISTRICT * Valorous Unit Award, 1st Squadron, 10th Cavalry Regiment, 4th Infantry Division , Streamer embroidered II Corp Defense * Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1966-1969 * Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1969-1970 * Republic of Vietnam Civil Action Honor Medal, First Class, Streamer embroidered VIETNAM 1966-1969 * Army Superior Unit Award for Force XXI Test and Evaluation * Valorous Unit Award, 1st Brigade Combat Team & Supporting units, 4th Infantry Division, Streamer embroidered with Operation Red Dawn, Iraq - 2003 * Presidential Unit Citation , Streamer embroidered Operation Iraqi Freedom * Presidential Unit Citation , Streamer embroidered Operation Iraqi Freedom * Meritorious Unit Commendation , 7th Squadron 10th US Cavalry, Streamer embroidered Iraqi Governance 2004-2005 * Meritorious Unit Commendation , 7th Squadron 10th US Cavalry, Streamer embroidered National Resolution 2005-2007 * Valorous Unit Award, 1st Brigade Combat Team & Supporting units, 4th Infantry Division, Streamer embroidered with Iraqi Surge 2007-2008 * Valorous Unit Award, 1st Brigade Combat Team & Supporting units, 4th Infantry Division, Streamer embroidered with Iraqi Sovereignty 2009-2010
How many years passed between the ned of Iraqi Governance and the beginning of Iraqi Sovereignty?
4