Well Nikon strobe would be visible up to 2-3 miles but the question is how you are going to do on battery life? I know that some of the survival strobes will run 12 hours constantly on the set of batteries how your nikon strobe is going to do? I shot weddings with my SB28 strobe and got about 2 - 3 weddings out of 4 aa. Thats about 300 pics per wedding which totals on 900 flashes using lithiums. Aqua tech strobe 70 flashes per minute; 1 AA Alkaline ; 8hr burn time. SO doing the math you got about 33000 flashes. You can pass out and strobe will still be functioning, you can pay attention to the surroundings and strobe will be going off on its own.

Yes if you have no choice photo strobe will do the job but regular survival strobe will be much better, cheaper and more efficient.