"They hit it off when Lee said he was the littlest guy in his unit so they made him be the tail gunner over the South Pacific," Grant told the Chronicle.
Brundige was able to contact his son, who is in his 70s, and let him know he is safe.
Brundige has also bonded with Axle, the couple’s dog.
"I thought, 'If that were my grandpa, where would I want him to be?" Grant told the San Francisco Chronicle. "We told him this could be his forever home but that is totally up to him."
The Associated Press contributed to this report.