A mosquito clings to the wall of an incubation jar; it was collected as part of the mosquito surveillance program at Fort Bliss, Texas, to prevent the spread of West Nile virus, Oct. 10. The insects are shipped to U.S. Army Public Health Command Region - North to test for transmittable diseases. (Photo by U.S. Army Sgt. Jonathan W. Thomas, 16th Mobile Public Affairs Detachment)