Remarks after Iowa caucuses, Des Moines, Iowa, 19 Jan. 2004. The "Yeah" at the end of these comments was perceived as a scream and contributed substantially to the decline of his presidential candidacy.
"Bill Marriott: Mitt Romney Will Rescue America’s Yacht ... From Indeterminate Peril, Apparently" by Jason Linkins, www.huffingtonpost.com. September 28, 2012.