Context: Coming off their Monday night road win over the Saints, the Vikings went home for a Week 6 NFC North duel with the Detroit Lions. In the first quarter, the Vikes got an early lead as Lions QB Dan Orlovsky unintentionally ran out of the back of his own end zone, giving Minnesota a safety which Orlovsky didn't know why the whistles were blown. In the second quarter, Detroit got the lead as kicker Jason Hanson got a 40-yard field goal. In the third quarter, the Lions increased their lead as Orlovsky completed a 12-yard TD pass to WR Calvin Johnson. The Vikings answered with QB Gus Frerotte completing an 86-yard TD pass to WR Bernard Berrian. In the end of the fourth quarter, the Vikes got in field goal range due to a controversial pass interference call on Leigh Bodden. The Vikes sealed the win with kicker Ryan Longwell nailing the game-winning 26-yard field goal.

Question: What was the longest TD pass?

Answer:
86-yard