I forgot to pack extra batteries for my headlamp. I drove to the WMA, got my pack and stand on my back turned on my headlamp and nothing. I think it got swtiched on in my pack somehow. At first I though I was f'd. Then I thought, I do have my cell phone. It was still dark but there was barely enough light to where I could see when I was in the open. I had to use my phone to look for my blaze tacks, and then to get my stand put together and get up the tree. It worked though. Thanks God for cell phones. Didn't see anything though.