Tuesday was the first time Waltz faced lawmakers since mistakenly adding a journalist to a private Signal chat used to discuss sensitive military plans.
Defense Secretary Lloyd Austin praised Biden for his "profound and personal commitment to the Department of Defense and the American military" on Sunday.
A new report finds Black airmen in the ranks of E-1 to E-4 are more likely than their white counterparts to face Article 15 or court-martial referrals.
