Read this article and answer this question The Eagles returned home to play against a struggling Lions team.  In the first quarter it was all Lions with Jason Hanson kicking field goals from 46 and 34 yards out for leads of 3-0 and then 6-0.  The Eagles took the lead in the 2nd quarter with Michael Vick's 2-yard touchdown pass to LeSean McCoy for a 7-6 score at halftime.  In the 3rd quarter the Eagles were able to move further ahead with 2 Alex Henery field goals:  26 and 32 yards out for leads of 10-6 and then 13-6.  Henery would kick 49-yard field goal for a 16-6 lead before Matthew Stafford ran for a QB 1-yard touchdown to shorten the Eagles' lead to 3 at 16-13.  But the Eagles again pushed ahead by 10 as Vick found Maclin on a 70-yard touchdown pass for a 23-13 lead.  But then the lead was shortened to 3 again as Stafford found Nate Burleson on a 17-yard touchdown pass for a 23-20 score and then tied the game with Hanson's 19-yard field goal at 23-23 to send the game into overtime.  In overtime, the Eagles won the toss but went 3 and out as the Lions were able to drive down the field and wrap things up with Hanson's game-winning 45-yard field goal to end the game 26-23. With the loss, the Eagles head into their bye week at 3-3.  The team also dropped to 2-3 in games where Vick turns the ball over.
How many field goals did Jason Hanson kick?
4