Security teams kept pace with marathon runners in New York

As more than 50,000 runners competed in the world's largest marathon on Sunday, the New York Police Department, or NYPD, was out in full force to keep the event safe.

Thousands of police officers were on duty to safeguard the runners and the more than 1 million spectators at the 49th annual TCS New York City Marathon.

The police force covered the ground, sky and waters along the 42-kilometer route, which traverses the city's five boroughs. Nothing was left to chance for the event, which came a week after a US military mission led to the death of Islamic State leader Abu Bakr al-Baghdadi.