Coming off their divisional road win over the Dolphins, the Jets flew to Ralph Wilson Stadium for a Week 4 AFC East duel with the throwback-clad Buffalo Bills. New York scored in the first quarter as running back LaDainian Tomlinson got a 1-yard touchdown run. The Jets added onto their lead in the second quarter with a 19-yard field goal from kicker Nick Folk, followed by quarterback Mark Sanchez completing a 41-yard touchdown pass to wide receiver Braylon Edwards. The Bills closed out the half with quarterback Ryan Fitzpatrick finding tight end David Martin on a 4-yard touchdown pass. New York pulled away in the third quarter as tight end Dustin Keller caught a 3-yard touchdown pass from wide receiver/quarterback Brad Smith, followed by his 2-yard touchdown reception thrown by Sanchez. Afterwards, Tomlinson's 26-yard touchdown run effectively secured the victory. Buffalo closed out the game in the fourth quarter as Fitzpatrick threw a touchdown pass to wide receiver Steve Johnson.

Based on the above article, answer a question. Who scored the last touchdown of the game?
Steve Johnson