Read this article and answer this question  On October 1, the Chiefs hosted the San Francisco 49ers at Arrowhead Stadium.  Coach Herman Edwards confirmed Trent Green would not play in the game.  The game was broadcast on Fox at noon Kansas City time. The Chiefs defense shut out the 49ers high scoring offense, forcing two interceptions and three forced fumbles.  Quarterback Alex Smith was held to 92&#160;yards passing and the 49ers to 93&#160;yards rushing. In their first three games, the 49ers had given up only four sacks, but against the Chiefs, they allowed five total sacks. Quarterback Damon Huard completed 18 of 23 passes for 208&#160;yards and two passing touchdowns. While compiling a 133.3 passer rating - 158.3 is perfect - Huard was hardly ever touched or even hurried by a San Francisco defense which had rung up 12 sacks in its first three games.  The game marked the first shutout for the Chiefs defense since December 1, 2002, and the 49ers their first shutout since 2004 and only their second since 1977.
How many incomplete passes diid Damon Huard throw throughout this game?
5