Answer based on context:

Despite the loss the previous week, the Saints could clinch a first-round bye with a win and help. They entered the Meadowlands against a New York Giants team trying to gain momentum that could lead them to a playoff spot. Hoping they could capitalize off the Saints loss, the Giants' first drive saw a 55-yard touchdown pass from Eli Manning to Plaxico Burress.  The Saints' offense opened with a three-and-out, but they successfully recovered their punt. A field goal narrowed the score to 7-3. A subsequent Saints drive ended with another field goal. With 10:30 left in the second quarter, the Saints directed a huge, time-eating drive that ended with a touchdown on fourth-down with just 1:56 left in the half. Seven minutes into the third quarter, Reggie Bush sped past the Giants' linebacker corps and scored on a one-yard touchdown, to lengthen the score to 20-7. In the middle of the third quarter, Reggie Bush returned a punt, fell onto his knees (but because nobody touched him he was not down by contact), and he then ran the ball in for a touchdown. However, a challenge revealed that the Giants' punter just barely nicked the leg of Bush, and he was ruled down by contact.  Early in the fourth quarter, Deuce McAllister ran it in for the final touchdown of the day, and John Carney sealed it with a 38-yard field goal. The Saints defense was stout throughout the game, shutting out the Giants after their opening touchdown, and never allowing the Giants to run a play in their territory. With the win, the Saints improved to 10-5. The following day, the Dallas Cowboys fell to the revitalized, Jeff Garcia-led Philadelphia Eagles, and the Saints secured the #2 spot in the NFC, and a first-round bye.

How many yards was the longest field goal?
38