WASHINGTON — Air Force Gen. CQ Brown, president Joe Biden’s nominee to serve as the next chairman of the Joint Chiefs of Staff, warned today that Alabama Republican Sen. Tommy Tuberville’s high-profile blockade of military appointments will force the US military to “lose talent.” Speaking before the Senate Armed Services Committee during his confirmation hearing for his impending role, Brown said in response to questions from Sen. Elizabeth Warren, D-Mass., that officials are “working to mitigate the challenges associated with the holds,” on hundreds of military nominations, highlighting impacts on readiness, leadership transitions and military families. Brown also underscored concerns...