During the sort shift an Associate is badly injured by a pallet jacket colliding with the back of their right leg. While administering first aid, the Area Manager $($AM$)$ on site determines the Amazon Associate $($AA$)$ suffers from broken bones, non$-$stop bleeding and is unable to walk. The AM calls $911.$ EMS first responders transport AA to the hospital. The AM notifies the site lead, Workplace Health and Safety $($WHS$),$ Human Resources $($HR$),$ and the AA$$s emergency contact, and then escalates the incident to the appropriate regional level. What part of the emergency safety escalation process did this leader forget to do$?$