Twelve years after moving to the United States from Bangladesh, Didarul Islam sought to join the ranks of the nation's largest police department because he "got inspired" by the "blanket" of protection the NYPD provided to his community, according to an essay he wrote as part of his police academy application.

The New York City office building at 345 Park Avenue where a deadly shooting occurred serves is the headquarters of investment firm Blackstone, as well as the NFL and Rudin Management.