Hegseth hits back at misconduct allegations in contentious hearing

Committee chairman Sen. Roger Wicker, R-Miss., in the first question of the hearing, asked Hegseth to respond to the allegations against him.

"Let's get into this allegation about sexual assault, inappropriate workplace behavior, alcohol abuse and financial mismanagement during your time as a nonprofit executive," Wicker said.

Hegseth, who has denied the accusations, railed against what he claimed was a "coordinated smear campaign" by the news media.

"All they were out to do, Mr. Chairman, was to destroy me," Hegseth said. "And why do they want to destroy me? Because I'm a change agent and a threat to them. Because Donald Trump was willing to choose me, to empower me to bring the Defense Department back to what it really should be, which is war fighting."

Hegseth then turned personal, saying he's not "perfect" but is now ready to lead the Pentagon.

"I'm not a perfect person, but redemption is real," he said. "And God forged me in ways that I know I'm prepared for."

Hegseth is now speaking for the first time before the committee.

His opening statement is being interrupted by hecklers, who were then escorted out of the room.

Chairman Roger Wicker thanked authorities for their "swift reaction" to the first incident.

"Let me just say this, the Capitol Police are going to remove immediately individuals who are interrupting the hearing," Wicker said.

10:45

Pete Hegseth’s opening statement interrupted by protesters

President-elect Donald Trump’s nominee for defense secretary promised to bring “warrior culture back to the Department of Defense."

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Trump's pick for national security adviser, Rep. Mike Waltz, introduced and endorsed Hegseth.

Waltz was recognized by Sen. Roger Wicker, the chairman of the committee, who noted Waltz was still a member of Congress for several more days.

"He will bring the perspective of being the first secretary of defense to have served as a junior officer on the front lines, not in the headquarters on the front lines in the War on Terror, and recognizes the human costs, the financial costs and the policy drift that was discussed often in this very room that led us to decades and decades of war," Waltz said of Hegseth.

Waltz is also a retired Army National Guard officer and war veteran.

Dozens of veterans -- some wearing service badges -- filled the hearing room in the Dirksen Building in support of Hegseth, wearing pins with the nominee's name. A number of them are wearing black baseball caps with the nominee's name and the bone frog logo associated with the Navy SEALs.

Spotted in the crowd were Sean Parnell, a former Army Ranger and conservative media personality, and Tim Kennedy, an ex-UFC fighter and former Green Beret.

The group, which was buzzing with excitement ahead of the hearing, appeared to cheer for Hegseth and shout "USA!" as the hearing got underway.

There are also a small group of Code Pink antiwar protestors in the room, with signs reading "No Hegseth No Crusade" and "No Hegseth No Christian Jihad."

-ABC News' Benjamin Siegel, Lauren Peller, Arthur Jones and Olivia Rubin