A gunman in a gas mask and construction vest set off a smoke grenade and fired a barrage of at least 33 bullets in a rush-hour subway train in Brooklyn, shooting at least 10 people Tuesday, authorities said. Police were scouring the city for the shooter and trying to track down the renter of a van possibly connected to the violence.
On the morning of April 19, 2020, Dawn Henneberry knew what she had heard.