Coming off their dominating road win over the Rams, the Ravens went home, donned their alternate uniforms, and played a Week 4 Sunday night duel with the New York Jets.  Baltimore delivered the game's opening punch with safety Ed Reed forcing a sack-fumble from Jets quarterback Mark Sanchez, allowing linebacker Jameel McClain to recover the fumble and go 6 yards for a touchdown.  New York would respond with running back Joe McKnight returning a kickoff 107 yards for a touchdown.  Afterwards, the Ravens regained the lead with a 38-yard field goal from kicker Billy Cundiff, followed by a 3-yard touchdown run from running back Ray Rice.  Baltimore added onto their lead in the second quarter with another 38-yard field goal from Cundiff, followed by defensive end Haloti Ngata forcing a fumble from Sanchez, allowing linebacker Jarret Johnson to return the fumble 26 yards for a touchdown.  The Jets responded with linebacker David Harris returning an interception 36 yards for a touchdown, followed by kicker Nick Folk booting a 40-yard field goal.  The Ravens struck back in the third quarter with cornerback Lardarius Webb returning an interception 73 yards for a touchdown.  From there, Baltimore's defense prevented any comeback attempt from New York. With the win, the Ravens went into their bye week at 3-1.. How many defensive touchdowns were scored?