Hoping to maintain their winning streak the Titans played on home ground for an AFC duel with the Steelers. In the first quarter the Titans trailed early when WR Antonio Brown returned a kickoff 89&#160;yards to the endzone for a touchdown. The Titans tried to cut the lead with kicker Rob Bironas nailing a 21-yard field goal. In the 2nd quarter the Titans progressively fell further behind with kicker Jeff Reed hitting a 36 and a 34-yard field goal, followed in the fourth quarter by his 25 and 27&#160;yard field goal to go up 19-3. The Titans tried to tie the game when QB Kerry Collins threw a 2-yard TD pass to WR Nate Washington (With the 2-point conversion made), but the Steelers defense prevented any more scoring from the Titans, giving Tennessee the loss.
Question: how many yards was the shortest field goal?
Answer: 21