June 1 marks one year since a gunman walked into a Tulsa hospital and started shooting.

The gunman killed four people, Dr. Preston Phillips, Dr. Stephanie Husen, hospital worker Amanda Glenn, and patient William Love. He then killed himself.

When the shooting at Saint Francis happened, Tulsa Mayor G.T. Bynum was in his office. The fire chief called him first.

News On 6's Emory Bryan was live at Saint Francis as the mayor looked back on that day.