UPDATE:

Sgt. William Bailey of that Deschutes County Sheriff's office reported that Gale Larson has been located with his vehicle in the area of Goverment Camp.
"A motorist stopping at a gas station had seen the recent KTVZ alert on Facebook regarding Larson being missing," Bailey stated. "As the motorist walked into the station, she saw Larson and immediately thought she recognized him from the alert. After checking her phone to confirm it was him, she notified law enforcement.
"Larson’s family is on their way to his location now to be reunited. We would like to thank the Oregon State Police for their assistance at Government Camp. We would also like to recognize and give a special thank you to the observant motorist that found Larson and immediately reported it to law enforcement."
The Deschutes County Sheriff’s Office is seeking the public’s help in locating a Sisters area man, last seen at 11:45 a.m. this morning at his residence in the 16000 block of Cattle Drive Road in Sisters.

Elwin “Gale” Larson, age 86, is believed to have left his residence on Cattle Drive in his tan 2008 Toyota Tacoma with lumber rack, bearing Oregon registration plate SL67632, sometime after 11:45 a.m. today. His whereabouts are unknown and investigators have learned Larson has difficulty hearing and suffers from memory loss. Larson is a white male, 5’11”, 165 pounds, with light colored hair and blue eyes.

Larson is possibly wearing a green and blue striped pullover shirt and blue jeans.

Larson does not have a phone with him and has difficulty walking, so he may be sitting inside or near his vehicle.

He is familiar with the areas of Three Creek Lake, Squaw Creek Canyon, and Tollgate.

The Deschutes County Sheriff’s Office is asking anyone with information or that has seen Gale Larson or his vehicle since noon today to call into non-emergency dispatch at 541-693-6911 and speak with a deputy.