It looks like a butchered version of Khe Sanh, which was the name of an US Army base in Vietnam that was the site of a battle during the Vietnam War.
http://www.answers.com/topic/battle-of-khe-sanh?method=6
"Khe Sanh" is also the name of a post-Vietnam protest song sung by the Australian band Cold Chisel.
Khesan is definitely nmsaa unless it's a genuine ethnic name given by genuinely ethnic parents lol.
♦ Chrisell ♦
All we have to decide is what to do with the time that is given us. - J.R.R. Tolkien.