Why the first hours decide this, what the caregiver in front of you is carrying, and what changes the moment you find them.
Notice what the caregiver or the facility staff is carrying before you ask them anything. Shame is the most common thing at the scene of these calls. Families delay calling out of embarrassment, guilt, and fear of being judged for failing to keep someone safe, and facilities have been observed delaying for fear of liability. A person who believes you think they're negligent will under-report what happened and how long it's been, and that number is the one thing you most need to be accurate. Notice your own pull toward the same question too, who's at fault, the family, the facility, an aide who stepped away for a minute. It's a fair question and it can wait. Right now it only competes with the one that matters: finding them safely.
The first thing to know is that this is time-critical in a way that a standard missing adult call is not. In the foundational Virginia study of search and rescue incidents involving people with dementia, no fatalities occurred among those located within 24 hours. Past that mark, the mortality rate was 46%, with deaths caused by hypothermia, dehydration, and drowning. Police services across the regions in one Ontario study prioritize missing persons with dementia at their highest urgency for exactly this reason.
That urgency runs directly into a widespread public misconception that a family must wait 24 hours before calling police. They don't, and the belief is one of the most consistently reported obstacles officers describe. Every hour of delay widens the search radius.
Slow down at the exact moment everyone wants to speed up. One person approaches, from the front, not a group. Don't grab. Someone who has been walking for hours, frightened and possibly cold, suddenly surrounded by strangers in uniform, is the setup for the struggle nobody wants at the end of a successful search. Ask about what they're carrying, use their name, give the reunion a minute before the logistics start. Medical evaluation for exposure, dehydration, and unwitnessed falls should be the default rather than the exception.
The family standing in the driveway is going to replay tonight for a long time. What they remember about it is partly yours to decide.