![Profile Image](https://pbs.twimg.com/profile_images/585591643056791552/g-0Pc9p-_normal.jpg)
Holly Bailey @hollybdc
First witness up today is Dr. Martin Tobin, a Chicago-area physician who specializes in pulmonary and critical care. He’s a national expert on how people breathe and is going to tell the jury about the lungs and breathing as prosecutors make the case that Floyd died of asphyxia — PolitiTweet.org