The cloaking device is a staple of science fiction. But while a Klingon Bird-of-Prey materializing out of thin air makes for fun special effects, real-world stealth technology has mostly focused on lowering observability to radar and infrared sensors that can see further than the human eye.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.