 Dr. Ted DeWeese is the dean of the Johns Hopkins School of Medicine. Top stories we're working on for you right now on WTOP. President Biden says he is staying in the presidential race despite growing calls from Democrats for him to drop out. High barriers have been put up in downtown D.C. and near the White House. In advance of the NATO summit that starts tomorrow, there will be many street closures in place. Keep it here for full details in the minutes ahead. 648.