The Trump administration’s plans for a rapid vaccine rollout came into clearer focus Wednesday, sparking confusion within the administration and confrontation with Democratic nominee Joe Biden.

The Department of Health and Human Services unveiled its plans Wednesday for distributing a coronavirus vaccine, the first time the agency has made such plans public. Officials overseeing Operation Warp Speed, the White House initiative to fund research into a vaccine and treatment for COVID-19, promised that all six of the government-backed vaccine efforts would be in the final stage of trials by the end of the year, and once approved, they will be shipped out to states within 24 hours. Centers for Disease Control and Prevention Director Dr. Robert Redfield told reporters Wednesday that the goal “is to have enough COVID-19 vaccine for all people in the United States who wish to be vaccinated.”