According to a knew study by WalletHub that published info about the best states to be a cop and unfortunately Montana did not rank in the top.

WalletHub has a lot of great studies they publish. This one is about the best and worst states to be a police officer. From competition and opportunity to the job hazards and protection. We had the overall rank of 41, in the bottom and had the lowest with a 46 in "Job Hazards and Protection". It is dangerous to be a cop in Montana due to weather, the wilderness, and the vast amount of land as well as other reasons. We did have a decent quality of life ranking with our officers.

Source: WalletHub