During the final shootout when Rafael tries to run away, the license plate 2DDT456 is on a parked car where Street tackles him and arrests him. This plate was also used on The Rookie S5E3.
During the final shootout, Hector hides behind a car with the license plate 2ABM543. This plate was also used on The Rookie S5E6, on two different vehicles on The Rookie S5E7, and on The Rookie S5E16.
During the final shootout, SWAT officers take cover behind a car with the license plate 3PCI218. This plate also shows up on The Rookie S5E15.