New coach John Fox has confirmed that the Broncos will switch to the 4-3 defensive scheme. The Broncos moved to the 3-4 front under Josh McDaniels before the 2009 season after employing the 4-3 for 14 seasons under coach Mike Shanahan. "I think we'll make the commitment to the 4-3. The transition from the 3-4 to 4-3 is much easier than going from the 4-3 to 3-4," Fox said. "So we feel pretty confident about that switch."