51.   The Environmental Protection Agency scoured the American Media building for three weeks, collecting samples from desks, floors and air ducts.

52.   The men broke out of the prison by gaining access to an air duct and then scaling two fences topped with razor wire.

53.   The pilot would stand on two footrests, lean on a sliding backrest and grip handles that control the tilt and speed of Hula Hoop-sized air ducts.

54.   They crawled through an air duct, made their way to the roof, then reached the ground and climbed over the fences, she said.

55.   They crawled through an air duct, made their way to the roof and finally reached the ground and climbed over two fences, she said.

56.   They crawled through an air duct, made their way to the roof, then reached the ground and climbed over the fences, officials said.

57.   They also punctured tires in the landing gear and threw stones into the air ducts of one of the engines.

58.   Smoke and flames quickly engulfed most of the building through air ducts, police said.