I think that's a bit of a stretch to find applications for a fun toy, when FLIR-equipped drones can fly faster, farther and stay aloft longer. But fortunately, he chose to fly directly to the problem from a very low altitude, rather than waste time actually searching.

Once you know where the victims are, then this might be useful to get a human onsite quickly, but filling the urge to scratch one's nose looks like a fatal mistake.

Because the jets are attached to his wrists, it means that while flying, the rest of his body weight including his backpack and jet fuel has to be supported by the strength of his upper arms. A parallel bar gymnast would be most suited for this, and it would be more difficult for a woman to fly.

Because the jets are attached to his wrists, it means that while flying, the rest of his body weight including his backpack and jet fuel has to be supported by the strength of his upper arms.

He has two jets on each arm, one looks a little smaller. Is that for better balance and control?

I can see the potential but as HR pointed out it's pretty limited.

Can't speak to the aerodynamic design, but obviously they are attached and oriented to maximize control.

As for usefulness, yes, it could work great in treeless environments, but not only might it be far more difficult to find someone in a dense forest but landing in one could be tricky too.

A big limitation of jet packs like this is flight time. Takes a lot of fuel to support one's weight. A winged suit would be more efficient but of course requires horizontal movement to stay up. Maybe a winged suit added to this contraption capable of vertical take off & landing will be coming next.