A conventional bomb so big that it's first name is "massive" is set to be tested for the first time at this Florida Panhandle base Tuesday.
Air Force officials warned residents of communities surrounding the western half Eglin's 724-square-mile military reservation to be prepared to hear an explosion that sounds like thunder or a slamming door between noon and 5 p.m. although the blast will be miles away.
Eglin officials said the loudness of the 2100-pound "massive ordnance air burst," or MOAB, will vary depending on wind currents and some people may not hear it at all.
They added that the test will be conducted only under weather conditions best for minimizing the sound and inside a buffer zone to keep a shock wave and debris from the explosion inside Eglin's boundaries. The backup date for the test is Thursday during the same time frame.