The bear knocked Gamboa down, then picked her up and threw her to the ground. The bear went on to pummel Gamboa several times more with her powerful paws.
Throughout the May 18 attack, Gamboa lay in a fetal position and remained silent.
That action likely saved her life.
"I actually can't even believe this actually really happened," the 25-year-old woman said in a videotaped interview released by the Army on Thursday. "It seems still surreal, just for the fact that I'm still alive – seems unreal."
In the interview taped Tuesday at her hospital bed, Gamboa said she surrendered herself to the bear during the attack at Joint Base Elmendorf-Richardson in Anchorage after she encountered the animal and her two cubs. Gamboa, of Sacramento, California, is married to a soldier assigned at the base to the 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division.
The Army also released an interview with Sgt. Collin Gillikin, a combat medic from Rockford, Michigan, who rescued her after the mauling, which left Gamboa with lacerations to her neck, arms and legs, a torn ear and neck fractures. Her neck wound is visible in the video.
Mark Sledge, senior conservation law enforcement officer at the base, said he knows of only one other close encounter with a bear. Gamboa responded just as she should have, said Sledge, who participates in briefings introducing newly arrived J-BER service members to life in Alaska, including dealing with bears and moose. Gamboa's actions showed the bear she was not a threat.
"All that sow was worried about was the protection of her babies," Sledge said.
Gamboa was about 20 minutes into her run when she saw a cub on the side of the road. She immediately knew the mother bear had to be around. Sure enough, there it was, trotting toward her. She also saw the second cub.
It all happened so fast she's not sure if she was being bitten or lashed. She remembers the sow knocked her down, picked her up and carried her to the side of the road where the cubs were. The bear flopped her down on a grassy embankment and pummeled her, paused and attacked two more times while Gamboa lay curled in a fetal position. She didn't scream or fight.
And then the bear left.
Gamboa laid there for a couple minutes then crawled out of the embankment and rested some more. There was blood everywhere, her head hurt and her neck was pulsing.
"I felt completely like I was beaten half to death," said Gamboa, who has a 4-year-old son.
Holding both hands to her bleeding neck, she started walking back on the road, hoping someone would see her. Then she saw a car, which was driven by Gillikin. He rushed her to the base hospital, and Gamboa was later transferred to the Alaska Native Medical Center in Anchorage.
She was released from the hospital Thursday.
Lee Palmer / AP