Former soldier Steven Holcomb piloted the USA-1 bobsled Saturday to the United States’ first gold medal in four-man bobsled since 1948. Along with teammates Justin Olsen, Steve Mesler and Curt Tomasevicz, Holcomb set the track record during the first heat on Friday and then set it again on the second run to take a commanding lead. Two more strong runs Saturday ensured the “Night Train” sled piloted by Holcomb would give the U.S. its first gold in the four-man in 62 years. The win caps an amazing journey for Holcomb, a former Utah National Guardsman who needed surgery in 2008…