Deputies say a 72-year-old man was killed early Friday morning in a head-on crash in Manitowoc County.The Manitowoc County Sheriff's Office says deputies got called at 4:54 a.m. to the area of County Trunk Highway X and Louis Corners Road in the township of Schleswig for a two-vehicle crash.Deputies say preliminary details indicate an 18-year-old man from Malone an unincorporated community in Fond du Lac County was driving east on the highway when his car collided with another car going west.The driver of the westbound vehicle a 72-year-old man from rural Kiel was pronounced dead at the scene.The 18-year-old was taken by ThedaStar helicopter to ThedaCare Regional Medical Center in Neenah for serious life-threatening injuries.Names of the people in the crash were not released.