Last week, the NTSB held three days of hearings looking into what led up to the fatal crash between a plane and a helicopter in January.

On Wednesday, the National Transportation Safety Board (NTSB) began a three-day public hearing into the Jan. 29 crash involving an Army Black Hawk helicopter and American Eagle Flight 5342. Day one brought an emotional and unsettling glimpse into the moments that led to the collision, and the "systemic issues" that may have played a role.