The man in the center in the white shirt is (add: apparently not) the doctor who gave chest compressions to Corey Comperatore.
Add: I said that brashly on purpose to see if it would be contradicted. The doctor had sleeves on his shirt and so it's hard to tell if he is in this video because he was squatting. The gentleman in the top row in this video had no sleeves on his shirt and is probably the prominent one in this photo.
The man in the center in the white shirt is (add: apparently not) the doctor who gave chest compressions to Corey Comperatore.
Add: I said that brashly on purpose to see if it would be contradicted. The doctor had sleeves on his shirt and so it's hard to tell if he is in this video because he was squatting. The gentleman in the top row in this video had no sleeves on his shirt and is probably the prominent one in this photo.
I found this pbs article about him: https://www.pbs.org/newshour/nation/former-fire-chief-corey-comperatore-who-died-at-trump-rally-used-his-body-to-protect-family-from-gunfire