Omar Mir Seddique Mateen was an American mass murderer who killed 49 people and wounded 58 others, 53 of them by gunfire in a mass shooting at the Pulse nightclub, a gay nightclub in Orlando, Florida,
G4S Secure Solutions is an American/British-based security services company, and a subsidiary of G4S plc. It was founded as The Wackenhut Corporation in 1954, in Coral Gables, Florida, by George Wacke
The St. Lucie County Courthouse was guarded by Omar Mateen in 2013. Following his investigation by the FBI, G4S transferred him to guard a gated community in Palm Beach.