It's understandable that one would be thinking about bears on a remote drop-hunting trip to Alaska...it's a possible reality up here.
The possibility of an unintended bear encounter...or really miserable wx...or delayed pick-up in the field for days...or accidental physical injury, etc., etc. are all part of mentally planning a remote Alaska drop-off adventure. The challenge is always to keep one's focus on being mentally ready and prepared for those possibilities without dwelling or worrying about them, which is easier said than done for many of us, i.e., remembering the difference between possibility vs probability and prevention.
I have had more than a couple of unintended bear encounters in the field, and they all ended well for me and the bear, e.g., from seeing new grizzly tracks on the ground within a handful of steps from my tent the next morning to being bluff-charged by a grizzly that stopped just as I was beginning to pull the trigger of my pistol at about 10yds...and other experiences in between. That said, the absolute vast majority of my field adventures have been without any unintended bear encounters whatsoever.
Speaking just for myself, it's all about remaining and keeping mindful of the possible realities when I am in the field remotely, while also soaking in every minute of the experience and being thankful that I am even there.