Slaoui, 60, and Perna will oversee the initiative known as Operation Warp Speed, according to the people, who spoke on condition of anonymity ahead of an announcement expected later Wednesday. Slaoui will work on a volunteer basis.

The Trump administration project seeks to produce 300 million doses of a Covid-19 vaccine by the end of the year, hastening development by simultaneously testing many different candidates and beginning production before they’ve completed clinical trials.

The program will pull together private pharmaceutical companies, government agencies and the military to try to cut the development time for a vaccine by as much as eight months, according to two people familiar with the matter. Slaoui will serve as the program’s chief adviser while Perna will work as the chief operating officer, the people said.

In 2017, Slaoui retired from Glaxo, where he had worked for almost 30 years. The London-based company credits him with overseeing a vaccines pipeline that produced Rotarix, used to prevent diarrhea in infants, and Cervarix, to protect against a viral infection that can lead to cervical cancer.

Perna has since 2016 served as the 19th Commander of the U.S. Army Materiel Command, which manages the service’s supply chain worldwide. He was previously the Army’s deputy chief of staff and oversaw policies and procedures for the service’s logistics.

Slaoui will leave the board of Moderna Inc., one of the leading U.S. companies developing a vaccine, as well as other boards he sits on, said a person familiar with the matter. The person asked not to be identified because the departure hasn’t been made public yet.

Slaoui has been a Moderna board member since 2017, and in that role earned $490,000, including $65,000 in cash and $425,000 in options awards, according to a corporate filing.

Last month he joined the board of Lonza Group AG, a Swiss medical company that has contracted with Moderna to manufacture its vaccine. He’s also on the board of SutroVax Inc., a closely held vaccine developer.

A representative for Moderna declined to comment.

He’s a partner at the venture capital firm Medicxi, and is on the board of the Human Vaccines Project, a nonprofit enterprise that attempts to accelerate vaccine development by better understanding the immune system, and has said it will try and accelerate work on a coronavirus inoculation.

Slaoui earned a doctorate in molecular biology and immunology from the Université Libre de Bruxelles in Belgium, according to a 2017 press release from Moderna. He completed his postdoctoral studies at Harvard Medical School and Tufts University School of Medicine.