The Air Force canceled a second test today of MOAB, officially the Massive Ordnance Air Blast, because of bad weather.
A spokeswoman says the test has been rescheduled for Thursday weather permitting.
The 21,000-pound bomb, which contains 18,000 pounds of explosives, was first tested March eleventh, eight days before the United States invaded Iraq. It shook windows miles away and sent up a huge mushroom cloud.
Air Force officials said one role for the bomb is as a psychological weapon, but it has yet to be used in combat.
It is being eyed as a replacement for the 15,000-pound BLU-82, known as the "Daisy Cutter," that was used in the 1991 Persian Gulf War to clear minefields and more recently to blast caves believed to be hiding terrorists in Afghanistan.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or email@example.com.