Coming off their win over the Seahawks, the Broncos remained on home ground for an AFC duel with the Indianapolis Colts. In the first quarter, the Broncos trailed early when Colts' placekicker Adam Vinatieri nailed field goals from 38 and 33 yards. This was followed in the second quarter by quarterback Peyton Manning throwing a 5-yard touchdown pass to wide receiver Austin Collie. The Broncos got on the board, with placekicker Matt Prater nailing a 25-yard field goal. In the third quarter, the Broncos cut the lead, when quarterback Kyle Orton completed a 48-yard touchdown pass to wide receiver Brandon Lloyd, but the Colts replied, with Manning throwing a 9-yard touchdown pass to wide receiver Blair White. The Broncos responded, with Prater hitting a 34-yard field goal, but they trailed further in the fourth quarter, when Manning found Collie on a 23-yard touchdown pass, sealing the win for Indianapolis. Prior to the game, a moment of silence was held for wide receiver Kenny McKinley, who died on September 20, with the team paying tribute to him by placing a No. 11 decal on their helmets in his honor.

Answer this question based on the article: How many field goals were made during the first half?
3