Here’s the one I have:
I have another Logitech one that cost about $25.
I really, really like it. They’re really durable, easy for a kid to use, and pretty inexpensive.
Only con is if you drop it and the ball pops out, it can roll under the couch.
Yes. Special forces are vetted with lots of testing before joining. However, once they’re done doing things that make many psychologically stable people very unstable, they’re released back into the general population with little to no help or followup.