19 April 2013 (23:59 UTC-07 Tango 18 April 2013)/08 Jumada t-Tania 1434/30 Farvardin 1391/10 Bing-Chen (3rd month) 4711

Reports that multiple cities deploying bomb disposal units.  FBI agents now armed with rifles.  Helicopters arrived.  More cops arriving on foot, heading towards Arsenal Mall.

CBS affiliate read police press release that says situation is rapidly expanding.  MIT cop sniped, Watertown robberies/gun battles/explosions, now police being deployed to Cambridge!