The initial Associated Press wire story on Barry's 714th doesn't contain a single reference to booing.
And he hit it in Oakland!

George Hethcoat, UFMCS operations officer, said the program is about looking at the world through a different set of eyes.That's like tempering a shot of vodka with the contents of an Olympic-sized swimming pool.
Speaking at Thursday’s ceremony, Lt. Gen. John F. Kimmons, Army deputy chief of staff for intelligence, said the military has left the era of simple cause and effect analysis.
“This is not point and shoot,” he said. “We are behind that.”
He told the graduates they have to hold assumptions and truisms up to a bright light.
He said understanding things in the proper context becomes an issue of life and death on the battlefield.