when you go into that base, one of the commanders informs you of the difficulty they have been having with recent omni attacks. claiming they are struggling to keep up with recourses to fend omnis off.
then a group of omnis attacks the base. failing being able to attack you themselves, they do the only other thing they can, & thats train. IT SUCKS, I KNOW IT SUCKS. but then it is completely & utterly jusifiable from an RP perspective. sure training is a horrible thing to do, & i would be very irrate if i were in your shoes, but given the NPC's dialogue there they practically encoureage clanners to help them repel omnis.
now i may not be naieve enough to believe this, but i am just pointing it out from what the NPC's say, & i've dealt with hogtail on a number of occassions & he has always been very nice. just trying not to jump to conclusions here