User blog comment:Chaosian/Primary source for Tower Pack DLC/@comment-175.139.62.248-20130912032652/@comment-1932315-20130912194403

Though that's another possibility for Anna to have done something, and Rangers did survive the explosion of D6 (recall some wounded had been taken away at the very end), D6 itself was detonated so that nothing could be taken from it. Being able to rebuild D6 essentially voids the action of destroying it.