| Dead animals/birds/fish
|
Not just an occasional incident, but numerous animals (wild and domestic, small and large), birds, and fish in the same area |
| Lack of insect life |
Normal insect activity (ground, air, and/or water) missing, dead insects evident in the ground/water surface/shoreline |
| Physical symptoms |
Numerous individuals experiencing unexplained water-like blisters, wheals (similar to bee stings), pinpointed pupils, choking, respiratory ailments and/or rashes |
| Mass casualties |
Numerous individuals exhibiting unexplained serious health problems ranging from nausea to disorientation to difficulty in breathing to convulsions and death |
| Definite pattern of casualties |
Casualties distributed in a pattern that may be associated with possible agent dissemination methods |
| Illness associated with confined geographic area
|
Lower incidence of symptoms for people working indoors than outdoors, or the reverse |
| Unusual liquid droplets |
Numerous surfaces exhibiting oily droplets/film; numerous water surfaces displaying an oily film (no recent rain) |
| Areas that look different in appearance
|
Not just a patch of dead weeds, but trees, shrubs, bushes, food crops, and/or lawns that are dead, discolored, or withered (no current drought) |
| Unexplained odors
|
Smells ranging from fruity to flowery to sharp/pungent to garlic/horseradish-like to bitter almonds/peach kernels to newly mown hay; the particular odor is completely out of character with its surroundings |
| Low-lying clouds
|
Low-lying cloud/fog-like condition that is not explained by its surroundings |
| Unusual metal debris
|
Unexplained bomb/munitions-like material, especially if it contains a liquid (no recent rain) |
