A runner moves past a group of police officers gathered near the finish line of the New York City Marathon on Nov. 6, 2016. Authorities are increasing the number of officers and other law enforcement personnel for this year’s race, in the wake of an Tuesday’s terrorist attack in the city, in which a truck struck and killed eight bicyclists.

A runner moves past a group of police officers gathered near the finish line of the New York City Marathon on Nov. 6, 2016. Authorities are increasing the number of officers and other law enforcement personnel for this year’s race, in the wake of an Tuesday’s terrorist attack in the city, in which a truck struck and killed eight bicyclists.