It's sensible as far as Drake is concerned. In the Junkyard EVERY bit of territory was marked as someone's, usually in bold colors and lights, and being caught in the wrong place alone would ordinarily be a death sentence. With the addition of their demons, the awareness of territoriality seemed to be ... heightened. Sometimes ignored, sometimes running into trouble was the specific goal, but here? There was no war on here. There were no advantages to going looking for trouble, and potentially a lot of drawbacks.

Drake was alone and there could be many wolves in the trees. The Colonel didn't tolerate stupid soldiers.

".. I'm glad. This is a ... an amazing place." He'll take that welcome, even if it's for him alone. It meant he could enjoy the feeling of the sun's warmth on his skin a little while longer, a thing that simply never happens under the grey skies of 'home'.

There's a faint snort at the thought of different markers. That's probably very true. "We usually rely on sight. Lights. Colors. I can see that wouldn't work well here." Except for the Vanguards, who favored green and thus would likely claim the entire natural world was their space because of it. "Other ways are ... ah. Unreliable. You never know if someone will be able to smell a scent trail, or even have a nose. If others of my tribe arrive, I will be certain they ask permission to visit."

But they would inevitably want to see. Sunlight, trees, ponds. Everything here was a mindbogglingly unfamiliar masterpiece. The DOOR at least could be remembered and recognized, even if scent marks inside would likely be missed.