Hundreds of separatist militants strapped explosives to their chests when they hijacked a moving train and took 300 people hostage in Pakistan. Security forces were being cautious as officials said the hostages were surrounded by militants wearing vests loaded with explosives. Government spokesman Shahid Rind said Pakistani forces were being backed up by helicopters in the remote region and described the attack as "an act of terrorism." At least 27 militants have been killed and security forces