In the seconds after conservative firebrand Charlie Kirk was shot at a speaking event on a college campus in Utah, video shows security guards surrounding the stage and springing into action to protect him.
In those hectic seconds, it was unclear where the shot came from, or if the gunman would fire another. Footage shows those security guards staying low to the ground, drawing their guns at their sides in case of more fire, and quickly tending to Kirk's wound.
Kirk was rushed to hospital where he died from his injuries.
But the attack has left many questioning what security measures were in place at the event - and if this could have been prevented.
Some 3,000 people gathered to hear Kirk speak at Utah Valley University (UVU) on Wednesday for his open-air college debate series.
