Big city firefighters need these. They could fly up skyscrapers and rescue people or bring hoses way up there.
Mountain rescue teams could use them to extract people or get first aid to the sides of cliffs.
I remember watching Navy Seals jumping out of helicopters in San Diego harbor and then presumably swimming down to meet submarines. They could do this in reverse - climb out of a submarine and then flying up to the helicopter.
Except that you can't really carry additional weight (certainly not another person). Even a lightweight hose or line would mess up your flight if it was tethered. As for fires: burning buildings are masses of hot, moving air which wouldn't be navigable (the best you could do would be to land on an unaffected side of the building).
Even the Martin Jetpack (the only other nearly-commercial product in this market at the moment):
Mountain rescue teams could use them to extract people or get first aid to the sides of cliffs.
I remember watching Navy Seals jumping out of helicopters in San Diego harbor and then presumably swimming down to meet submarines. They could do this in reverse - climb out of a submarine and then flying up to the helicopter.
Cool stuff.