Fauci: US government announced funding of three vaccine trials, on track for scale by end of the year/early 2021

The US government announced funding clinical trials on three COVID-19 vaccine candidates. According to Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, we're still on track for a vaccine at scale by the end of this year or early 2021. From CNN:

Phase 3 trials, which typically involve tens of thousands of people and measure whether a vaccine is safe and effective, will begin with one by Moderna in July, then an Oxford/AstraZeneca vaccine in August and one by Johnson & Johnson in September...

Last week, Fauci said the US should have 100 million doses of one candidate coronavirus vaccine by the beginning of 2021, but many doctors caution that is an ambitious goal. He has also said there will be "more than one winner" in the Covid-19 vaccine field on Tuesday.

Who will get first dibs? (And who wants first dibs?)

image: "Respiratory droplets produced when a man sneezes, visualised using Tyndall scattering" by James Gathany/CDC (public domain)