A recently released surveillance video shows the moments before fatal shooting at Parrish Medical Center in Titusville, Fla., according to an article on the WFTV website.
The video shows the shooter slowly walk past an unattended hospital reception area and into a hallway.
The video also shows three hospital workers running from the hallway shortly before the assailant walked out.
After the shooting, the man was tackled by two unarmed hospital guards, who were able to hold him down as police arrived.
Designing for Distraction: Benefits for Children, Families
Staffing and Consolidation Reshape Outpatient Facility Strategies
Adams Health Network Falls Victim to Phishing Attack
Ventilation and Filtering for Infection Control 
ChristianaCare Opens Aston Campus Neighborhood Hospital