Tradition, why waver from tradition, over risk, possible incident, or a few small incidents that may have happened elsewhere in the past? The incident which occurred early this morning may result in many reevaluating just how serious the risk is of group jogs early in the morning, especially when little to no visibility hours.
Police are not the only ones that do group jogs on public streets, college and education institution track teams do them, ROTC programs do them, military units might do them, even individual families.
A worst possible scenario occurred in Los Angeles, California, leaving over 2 dozen law enforcement recruits hurt. South Whittier area, reported as roughly between 6:20am and 6:30am. A vehicle was traveling the wrong way, and it went into the jogging group.
Whether a vulnerability was systematically identified, studied, attacked and exploited, or whether it was just an accident down to its very fundament in intention, the dimension of what could happen when a vulnerability exists is taken very seriously.
It used to be a part of the culture that driving very carefully when police or government was out jogging, as they were a part of the community that thy helped protect, so why not help protect them, or at least not be slacken in precautions to prevent accidents. These days, vehicular assaults are one of the number one causes of detriments to the health of police officers.