On October 6 , 1962 First Lieutenant Michael J. Tunney USMC not only became the first MarCad to die in combat .
On October 6 , 1962 First Lieutenant Michael J. Tunney USMC not only did so in the first fatal Marine Corps helicopter crash in Vietnam .
On October 6 , 1962 First Lieutenant Michael J. Tunney USMC not only became the first MarCad to die in combat , but did so in the first fatal Marine Corps helicopter crash in Vietnam .