There's significant structural damage to a number of buildings. That having been said, most were 100+ years old, constructed primarily of brick and mortar - not a really "strong" building in terms of lateral force resistance. Someone was out to cause damage to a specific business, hence the "clear the area" warning originating from the RV prior to the blast.
My money is that it was a former AT&T employee that felt wronged by them and was looking to do a maximum amount of damage to their infrastructure.
TexasRedneck,
I guess that that is as good a theory as any, given that the NPD seems to be CLUELESS about the reason for the "mini-explosion".
Based on Little Brother Ed's comments & my experience with OCONUS bombings/"NUTTY bombers", I have NO clue what the reason was. = This incident makes NO sense to me.
yours, satx