ER doc: Floyd most likely suffocated In this image from video, witness Dr. Bradford Wankhede Langenfeld, the doctor who pronounced George Floyd dead, testifies as Hennepin County Judge Peter Cahill presides Monday, April 5, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis. Chauvin is charged in the May 25, 2020 death of George Floyd. (Court TV via AP, Pool) In this image from video, defense attorney Eric Nelson, left, and defendant former Minneapolis police Officer Derek Chauvin, right, listen in court Monday in Minneapolis. Court TV via AP, Pool In this image from video, prosecutor Jerry Blackwell questions witness Dr. Bradford Wankhede Langenfeld, the doctor who pronounced George Floyd dead, as Hennepin County Judge Peter Cahill presides Monday, April 5, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis. Chauvin is charged in the May 25, 2020 death of George Floyd. (Court TV via AP, Pool)