The following is a press release from Missoula County Sheriff's Department Public Information Officer Brenda Bassett:

Today, a local resident contacted our Missoula Search and Rescue Chief to inform him that a group called "Search and Rescue Charities" had contacted her seeking donations for local SAR organizations. While the company has a website and contact number, neither the Sheriff's Office nor Search and Rescue were notified that they would be seeking donations on our behalf.
It has been reported that the same group has been contacting Great Falls residents seeking donations there. Great Falls Law Enforcement warns that while the group appears to have a local address, it is only a UPS Box and not a physical address for a business.
This is likely a scam and our group is not affiliated with this organization in any way.