@Ernest BywaterIR/FLIR/Thermal imaging can be, and is regularly defeated. Despite the Hollyweird crap, all the above requires contrast in the infrared spectrum. Roughly 9,000β14,000 nm wavelength is the typical used for thermal/IR with the visible spectrum on that side ending at ~770 nm. Starlight/nightvision, etc by contrast is on the opposite side of the visible spectrum (below 400 nm).
It cannot see through walls, heavy tree canopies, glass, and all the other Hollyweird examples. In order to see anything, there has to be a detectable temperature gradient sufficient to emit infrared in the electromagnetic spectrum that contrast it's surroundings. Further, the source has to be in a specific range dependent upon the calibration range.
The premise that there is no where to hide can be directly tied to the bullshit Hollywood puts out in films.
As for laser imaging, detection, and ranging (LIDAR), that is poorly suited to a manhunt. The basic premise behind it is simple. A laser is pulsed which starts a timer. It hits a target then ideally reflects from it. The reflection hits a sensor stopping the clock. Time of flight is calculated giving the distance traveled. That is tied to known elevations of the detector platform with the end result given as a datum point in mapping software.
Problem comes in when anything, such as a tree canopy, is in the way. Whole cave entrances can and have been missed by it. Then there is the problems created by diffraction, refraction, deflection, etc of the beam itself. It's near on useless in a fog, or anywhere with natural off gasing such as the gases given off at certain times in the smokey mountains (which is what gave them the name).
If the person is ignorant enough to believe everything they see on TV or in a movie, then yes, their freedom is going to be in short supply. If they are even half assed educated on the technologies arrayed against them, it will be much more difficult to find them. If the person thoroughly educates themselves on it, they could lead them on a merry chase around the fairy rings and never be caught unless they want to be caught.