Jae was originally the Warbler's skipper, as has been noted on Kim's page. Really though, she's far better at that job, and Jae's much better as a kind of bizarre and twisted mentor figure. I would highly recommend not reading his Tactical Dossier until you're caught up, and yes, that white space at the bottom is where stuff has been redacted.
Stories
UTF Dossier
Tactical Dossier