Taking the oath…

Dr. Bill Krissoff was commissioned Lieutenant Commander in the Navy Medical Corps on November 17, 2007, at the age of 61. His decision to apply to the Navy Medical Corps to care for Marines came in response to the death of his oldest son. In December 2006, his son First Lieutenant Nathan Krissoff, USMC, who was serving as a Counterintelligence Officer with the 3rd Recon Battalion in Iraq, was killed in combat.

Full story at Black Five.