Actually, not true. Ventura did not see combat in Vietnam.
The whole story is bogus:
http://www.prisonplanet.com/exclusive-jesse-ventura-blasts-navy-seal-punch-hoax.html
Following claims made by US Navy SEAL Chris Kyle that he punched Jesse Ventura for badmouthing US troops during a wake for a slain soldier in Coronado, California, Ventura has denounced the story as an outrageous lie, asserting that the event never happened. ....
Read Jesse Ventura’s Facebook statement below.
http://www.facebook.com/OfficialJesseVentura
The event this man spoke of never happened. I have been to Mc P’s many times since leaving the Navy. I was never there alone. I was always accompanied by other people. If this happened 6 years ago, someone would have known of it before now. Certainly in the UDT/SEAL community it would have been known. This has to be news to all of us.
I have always opposed the war in Iraq but I have never spoken or wished any ill will towards the soldiers. My heart aches that soldiers have died or been wounded because this war should never have taken place. I am perplexed over the agenda this man has and why a fellow Navy Seal would tell a lie about an event that never happened. ...