Without meaning to, this weekend I got to spend 48 hours in the field. A buddy and I planned a weighted ruck and gear test in the mountains, and we came home gloriously delirious and trashed, and just as I planned to slip into a hot bath, I got an opportunity to join a major search operation elsewhere in the mountains. So instead of a lavender-scented bath, I got a hasty resupply and a 3:00am departure. It was awesome!
Did it really count as being “in the field” for 48 hours, given that I made it home between the hike and the search? Not precisely, but my inner lawyer argues thus: “Yes, your honor, I did get one hot meal. But it was week-old ravioli re-heated in a microwave and eating standing up at 2am. And granted, I did sleep in a bed with sheets. But it was only for 2.5 hours and I was wearing dirty BDUs. And if the court will allow me to approach the ladies and gentlemen of the jury, they will find in my favor just based on how I smell.”
It was paradise, or some near-synonym that means “something gloriously horrible that you would like to do again soon.” And I learned tons, which I will dump out into print here:
1) Options for dressing for high heat
How should you dress for prolonged exercise in high heat? One school of thought says you should wear shorts and a tank top, like a marathoner, and be cooled by sweat and breezes. The other school says to protect yourself from radiant heat by covering up, like a farmer. Both philosophies make intelligent points and science has tried to adjudicate between the two philosophies. But the results are inconclusive.
So my hiking buddy and I ran an unscientific test of our own. We were the perfect pair of subjects: I like to hike in short shorts (though normally I wear long sleeves on top) and he is farmer and works every day covered up in hot sun. So I wore French surplus, which is the ideal type of the “sweat and breeze” approach, and he wore inexpensive technical pants and shirt, ably representing the “block the rays” approach.
On this particular hike, I was the lucky one. We walked in shade for much of the way, sparing me from a lot of radiant heat. And we were carrying moderately heavy weight (45 lbs./20kg for each) with significant climb, generating lots of body heat. We both agreed that I got the better bargain that day. Even with all of our huffing puffing, my body heat dissipated right away, his did not. And despite my exposed skin, I had the luxury of intermittent, partial shade; I did not have to provide all my own shade with my clothing.
Though I lucked out that day, I could also have lost under some circumstances. It is hard to be certain of the conditions you will find in an unfamiliar environment, and as Goggins says of environmental stress, “…more than any other variable [it] can break a motherfucker down fast.” From what I’ve experienced, people can compensate for heat and cold for a long time, but once we cross some threshold, we collapse suddenly and badly. Once that happens, we are so compromised that it’s extremely difficult to save the situation by our own actions.
So on training hikes like this, I might as well carry more gear. After all, once I’ve decided to haul 45# for the hell of it, there’s no reason I shouldn’t trade some of the steel plates or bricks for clothes, shelter-building supplies, batteries, tools, and three days of food instead. So my next experiment in romping will be to devise an easy on/easy off weight so that I can do my weighted rucks with my regular, homely, lovable, eminently useful SAR pack.
2) Map is not territory: On the search, I got lucky and was placed with one of our teams “tribal elders,” so to speak, who has half a lifetime of lessons to teach about searching. She pointed out how wrong the topographic lines on our maps were. The maps were composed from aerial photographs of the tree tops, she explained, and the cartographers’ (highly) educated guesses about the ground below. But they might have had no way to know about some deep, narrow fold in the earth that we were struggling across where the map showed no obstacle.
3) The compass is king: All of our search teachers emphasized map and compass skills, and early on they told us that the compass isn’t just an analog backup in case your GPS breaks. But only now have I come to understand why. First, my GPS is great at telling my location and my track, but it sucks at telling my direction. But more importantly, if I’m staring at my GPS unit, I’m not searching, I’m just walking. With a compass, I can set a heading, find a landmark to walk toward, and then keep my eyes up and moving. (Uncle Ron, one of our nav gurus, even teaches a clever, quick trick for laying your compass on top of your GPS screen and getting map bearings to a distant objective. Then you can put your GPS away, glance down at your compass only occasionally, and still arrive at your destination.)