The NFL released a statement Wednesday expressing gratitude for a flood of support it received after its headquarters at a Midtown Manhattan high-rise was targeted in a mass shooting Monday evening.

The NFL season kicked off at the annual Hall of Fame game with a moment of silence for the four people killed earlier this week by a shooter who was targeting league headquarters in New York. The gunman also wounded a league employee in the shooting Monday night.

Roger Goodell was emotional on Thursday as he publicly addressed the deadly shooting that took place inside 345 Park Avenue, the building that houses the NFL’s New York offices, earlier this week.