El Paso — The U.S. Army is hoping a nasal spray will help combat rising suicide rates in the military. It's approved a grant for a professor at the Indiana University of Medicine to research whether a nasal spray could safely deliver a certain anti-depressive chemical to the brain, helping curb suicidal thoughts. The naturally-occurring chemical, thyrotropin, or TRH, has trouble reaching the brain through pills or injection. The military hopes a nasal spray will be a more effective delivery method. The Army counted 38 confirmed or suspected suicides in July alone, and at least 120 so far in 2012.