With the support of family and friends, a grief-stricken father is struggling to make sense of a tragic accident that claimed the life of his 4-year-old son on Sunday afternoon."The first thing I could think of was to try to get him to the hospital as fast as I could," Gardnerville Ranchos resident Robert Geist said Monday. "I think when I picked him up, he was already gone. There was too much damage done."Mason Geist, 4, was pronounced dead at Carson Valley Medical Center after being transported from 980 Cavelti Road near Spring Valley, where the accident occurred around 3:45 …