Lance Cpl. Robert Lee, a mock victim for an active shooter exercise, called “Operation Social Fury,” plays the role of an injured coworker during the exercise aboard Marine Corps Air Station Miramar, Calif., Aug. 27. The exercise began with a disgruntled Marine who threatened in a Facebook post to kill his peers at the Recycling Center. - Lance Cpl. Robert Lee, a mock victim for an active shooter exercise, called “Operation Social Fury,” plays the role of an injured coworker during the exercise aboard Marine Corps Air Station Miramar, Calif., Aug. 27. The exercise began with a disgruntled Marine who threatened in a Facebook post to kill his peers at the Recycling Center.