Coe: "The whereabouts rule is to protect the athletes, it's to protect their reputations and it's to make sure that we move as hard and as fast as we can to drug-free sport. ...The vast majority of athletes make sure they don't miss those tests. They have to take it seriously."
European 110H champ Pascal Martinot-Lagarde was also announced.
The US has had a national track and field championships every year without interruption for over 120 years.
The policy was outlined by experts at Manchester Metropolitan University and includes separate start and finish lines for the half and full marathons, staggered starts, disinfection stations and a scarf with a breathing filter for every runner.
Brown reveals she has joined Derek Thompson's group with Ajee Wilson in Pennsylvania.
This was Tamberi's third competition of the week (he cleared 2.25m last weekend and 2.21m in a virtual meet on Thursday).