FBI: Most Wanted season 4 episode 16
Episode title: Imminent Threat (III)
The clock ticks as the FBI and FBI: Most Wanted teams join forces to hunt down the fugitive terrorists as they get closer to carrying out a plot to destroy a major New York City landmark and cause devastating civilian casualties. The crossover starts on FBI: International S02E16 Imminent Threat (I) and FBI S05E17 Imminent Threat (II).
