11.   Colleagues who had radios turned on soon discovered the boom was a bomb, and in minutes they could see black smoke rising from the center of town.

12.   Cramer said the man then said he heard an explosion and saw white smoke coming from the plane.

13.   Everyone could see smoke rising further south, but Cowan did not point it out and no one asked any questions.

14.   First Deputy Fire Commissioner William Feehan said workmen were soldering copper flashing around air ducts on a flat portion of the roof near the front when some saw smoke.

15.   From the Pittsburgh airport, air traffic controllers saw dense smoke rising to the northwest.

16.   From the top row of Giants Stadium, they say you can still see the smoke from the smoldering ruins of the World Trade Center.

17.   From the train station, we could see smoke from the fireworks and the blinking of police lights.

18.   From her front door, a nurse from New Jersey recalled, she had seen the smoke rising from the World Trade Center.

19.   He could see the smoke of the carnage from his balcony.

20.   Heat a lightly oiled pan until you see a little smoke coming from the pan.