Sat, Apr 19, 2013 updates on Boston bombing headlines at Drudgereport: 'Man in the White Hat' at large; Black hat man dead... Massive manhunt underway in Boston suburbs... Cops go door to door, street to street... City on Lockdown... Residents Told to Lock Doors... No Fly Zone in Place... ID'd as brothers from Russia region near Chechnya... Region 'plagued by an Islamic insurgency'... REPORT: Int'l ties, military experience, legally in US... Dzhokhar A. Tsarnaev, 19, on loose... PROFILE? 'WORLD VIEW: ISLAM'... TIMELINE: Bombs strapped to chest, men robbed 7-Eleven... Security officer shot dead on MIT campus... Chase after carjacking; suspects threw explosives at cops... VIDEO: 'There's explosions, gunfire down the street'... Black Hat Bomber may have blown himself up... POLICE SCANNER: Trigger found on body; At-large bomber 'may be wearing suicide vest'... Mass transit shut down in Boston... Harvard University closed...