Boston Bombings & Library

I awoke this morning to the news of several bombings occurring near the finish of the Boston Marathon. The news media in Melbourne (and elsewhere) are also reporting a possible bombing/fire at the Boston JFK Memorial Library, which may or may not be associated with the other bombings.
While looking for information I came across the Atlantic with Photos of the Boston Bombings and Boston.com with live footage (warning there are some confronting images).

My greatest sympathies to the people injured in the various blasts and to those who were killed. But also to those around the world who suffer these horrendous violent acts daily.

I'm interested in the significance of the Library as a possible attack site, having done various fire and bomb threat evacuation training. Our training is done fairly regularly, but it always annoys me at how reluctant people are to be dragged from their 'important' tasks - reading, studying, checking email.
Lets hope I never have to be part of a real incident such as was reported today.

Other bombings reported today include "Bomb Attacks Across Iraq kill 24, Injure 200", while the TV News last night showed a refugee camp (Zaatri)with 100,000 Syrian Refugees in Jordan.
Of concern to Australians was the report of Australian born young men fighting with the Syrian Rebels. Just waiting to come home with skills in violence newly honed and thinking this will solve their problems.

Time for another practice evacuation perhaps.