11.   The official account describes a dramatic scene in which whirring helicopters swooped down to grab him from a safe house used by the Arellano group.

12.   Two helicopters swooped over the town late in the afternoon after a day of skirmishes and mortar fire.

13.   A helicopter swooped into a prison yard and flew off with two inmates serving time for kidnapping and violent crime.

14.   A helicopter swooped into the prison yard of a Sao Paulo penitentiary and quickly flew away with a handful of inmates Thursday, law enforcement authorities said.

15.   A military helicopter swooped overhead, apparently directing police operations and occasionally firing tear gas into cramped residential streets.

16.   A military helicopter swooped overhead, apparently directing police operations in the suburb and occasionally firing tear gas into cramped residential streets.

17.   A helicopter swooped into the prison yard of a Sao Paulo penitentiary and quickly flew away with two inmates Thursday, law enforcement authorities said.

18.   A police helicopter swooped overhead.

19.   A police helicopter swooped through a pall of black smoke as thousands of people roamed the streets.

20.   Abrams tanks thundered down the hillsides, Apache helicopters swooped down firing missiles, and Bradley assault vehicles blasted targets Thursday, sending columns of smoke into the air.