The Sacramento Bee describes the early-morning incident this way:
One source with knowledge of the investigation said Stone was with two men and three women at Badlands Dance Club at 20th and K streets, then left and walked one block east, where the altercation began and Stone was stabbed. Police do not believe the attack was a hate crime.
Officers initially thought Stone would not survive the stabbing. However, once he arrived at the UC Davis Medical Center staff was able to stem the bleeding and he is expected to survive.
Air Force Lt. Col. Christopher Karns said he had no details on the circumstances surrounding the stabbing.
Stone, 23, and two of his childhood friends from Sacramento, National Guardsman Alek Skarlatos and college student Anthony Sadler, were vacationing in Europe over the summer when they took down a gunman on a Paris-bound passenger train, receiving sudden celebrity and worldwide accolades.
A British businessman and a French-American also have been praised for their efforts to stop the gunman.
President Obama met with the three Americans last month, praising them for their quick thinking and courage and calling them "the very best of America." They were also awarded France's highest honor by President Francois Hollande. The three appeared on late-night talk shows and received a hometown parade in their honor.
Stone suffered a cut thumb and other injuries in stopping the train attack. He is assigned to Travis Air Force Base in California.