Helena resident David Armstrong, who was a co-founder of the Race to the Sky dog sled race and the last known living member of Camp Rimini, where sled and pack dogs were trained during World War II, died at age 100. Armstrong died Tuesday night, retired Maj. Gen. Gene Prendergast, said. He asked for a moment of silence in honor of Armstrong on Thursday morning at the Hometown Helena community meeting. âRest in peace, Dave Armstrong, one of the last of the great ones,â former Helena Mayor Jim Smith said at the meeting. The Montana Military Museum had published a new calendar featuring Armstrong, and his friends at the facility at Fort Harrison have also designated 2021 as âThe Year of Dave Armstrong,â the Independent Record reported in January.