Complex sentence: Born in Kansas and raised in Oklahoma, Richard Killblane enlisted in the U.S. Army in 1973 and became an Intelligence Analyst in 1st Special Forces Group on Okinawa and was cross-trained onto a team as a demolitions man for one mission before his unit was inactivated.
Split into simpler sentences: Born in Kansas and raised in Oklahoma, Richard Killblane enlisted in the U.S. Army in 1973 and became an Intelligence Analyst in the 1st Special Forces Group on Okinawa. Japan and was cross-trained onto a team as a demolitions man for one mission before his unit was inactivated.