Tom Horn see as a warning. During the Wilcox train robbery investigation, Horn obtained information from Bill Speck that revealed which of the robbers had killed Sheriff Josiah Hazen during their escape. Either George Curry or Harvey "Kid Curry" Logan were said to have killed the sheriff. Both outlaws were members of Butch Cassidy's Wild Bunch gang, then known as "The Hole-in-the-Wall Gang" after their hideaway in the mountains. Horn passed this information on to Charlie Siringo, who was working the case for the Pinkertons. Horn briefly entered the United States Army to serve during the Spanish–American War as the chief packer
Butch Cassidy and the Sundance Kid arrival there, Sundance is dismayed by the living conditions and regards the country with contempt, but Butch remains optimistic. They discover that they know too little Spanish to pull off a bank robbery, so Etta attempts to teach them the language. With her as an accomplice, they become successful bank robbers known as "Los Bandidos Yanquis". However, their confidence drops when they see a man wearing a white hat (the signature of determined lawman Lefors) and fear that Harriman's posse is still after them. Butch suggests "going straight", and he and Sundance land their first honest job as payroll guards