Nominations of Dawn O'Connell and Miriam Delphin-Rittmon : hearing of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Seventeenth Congress, first session on examining the nominations of Dawn Myers O'Connell, of the District of Columbia, to be Assistant Secretary for Preparedness and Response, who was introduced by Senator Murray, and Miriam E. Delphin-Rittmon, of Connecticut, to be Assistant Secretary for Mental Health and Substance use [sic], who was introduced by Senator Blumenthal, both of the Department of Health and Human Services, June 8, 2021.