Not a bad story. The writing's good, but...
* "Munition that makes a microscopic black hole" smells an *awful* lot like "Blown Up For Great Justice" to *me* - even if it was implosion rather than explosion. It's also pretty blatantly a weapon. Yes, I know you aren't using it to kill people in this case, but it's still pretty clearly on the "destroy" side of that particular line.
* The area around Earth and the Moon are pretty popular places for Fen to hang out and/or live, for a variety of reasons. Between then and the Fen who are currently *on* earth, but capable of lifting in time, there's quite a force available for things like "saving the lives of millions of people".
EDIT: stripped out a concern. Turns out I was wrong on my background information on that one. Apologies.
* "Munition that makes a microscopic black hole" smells an *awful* lot like "Blown Up For Great Justice" to *me* - even if it was implosion rather than explosion. It's also pretty blatantly a weapon. Yes, I know you aren't using it to kill people in this case, but it's still pretty clearly on the "destroy" side of that particular line.
* The area around Earth and the Moon are pretty popular places for Fen to hang out and/or live, for a variety of reasons. Between then and the Fen who are currently *on* earth, but capable of lifting in time, there's quite a force available for things like "saving the lives of millions of people".
EDIT: stripped out a concern. Turns out I was wrong on my background information on that one. Apologies.