By MISSY RYAN, PAUL SONNE AND RAZZAN NAKHLAWI | The Washington Post | Published: February 9, 2021 Defense Secretary Lloyd Austin faces an early test as he races to advance a major initiative targeting far-right extremism in the ranks, a challenge that officials acknowledge is complicated by the Pentagon's lack of clarity on the extent of the threat following the U.S. Capitol riot. Austin's highly unusual order for a military-wide "stand-down," slated to pause normal operations in coming weeks so troops can discuss internal support for extremist movements, underscores the urgency of the task ahead for the former four-star general, who last month became the nation's first African American Pentagon chief.