Write a question about the following article: Coming off their win over the Colts the Chargers played on home ground for a rematch against the Raiders. The Chargers trailed early as QB Jason Campbell scrambled 9&#160;yards for a touchdown, followed by his 4-yard TD pass to WR Jacoby Ford. They replied in the second quarter as kicker Nate Kaeding nailed a 39-yard field goal, but trailed further with RB Michael Bush getting a 7-yard TD run. The Chargers cut the lead with Kaeding hitting a 33-yard field goal, followed by QB Philip Rivers completing a 4-yard TD pass to TE Antonio Gates. The Raiders would finish off with Darren McFadden making a 7-yard TD run. With the loss, San Diego fell to 6-6 and were swept by the Raiders for the first time since 2001.

Question about the article:
How many field goals did Nate Kaeding kick?