Dix is actually a pretty busy place, since it's the main MTA for Guard and Reserve ground units in the whole NE under Federal control (There's Drum, of course, but it's basically inaccessible to anything that isn't already there). Most of the troop activity is on weekends, but in terms of Soldier training days it is very high up among CONUS Army MTAs.
We sent two of our companies up there for training before they shipped out to Africa.
Still, Army forts lack critical targets, in attacking one you can certainly kill people but you aren't going to bring the operation to its knees or take out any irreplaceable equipment or infrastructure. Even as far as leaders are concerned, the phrase 'Irreplaceable Soldier' is an oxymoron. It's just the nature of what forts and ground-combat-oriented military organizations are. There are a lot of targets that are more high-value or more prone to critical failure at particular nodes than Fort Dix, but let's not get carried away with proving how smart we are by doing the target analysis homework for any prospective terrorists, eh? I recommend everyone zip it on posts along this line of thought, and just keep their own counsel.
They aren't looking for critical targets though DAT. They are looking for the psychological. The kind that says "we can hit anywhere and you can't stop us".
They could have targeted (insert reserve base here) and the effect on everyone in the military would have been the same.
