DAYTON, Ohio -- U.S. Air Force veteran Erin Simpson and her children stand with artist James Mellick at the Canine Warriors Exhibit at the National Museum of the U.S. Air Force on Nov. 29, 2019. Mellick sculpted military working dog Robson L096 to represent the problem of veteran suicides.  TSgt.(Ret.) David Simpson former military working dog handler of Robson, took his own life in 2017 having Lyme disease and PTSD. (U.S. Air Force photo by Ken LaRock)