The Pentagon shrugged off a threat from North Korea Wednesday to wipe the United States off the map. "I don't even know how to respond to that. It's silliness," said Pentagon spokesman Geoff Morrell."For what and with what?" But even as the spokesman discounted the threat from the communist nation, which reportedly may fire a Taepodong-2 toward Hawaii in early July, he defended Defense Secretary Robert Gate's decision to move the THAAD system to Hawaii along with the massive SBX radar system. "I don't think he would have deployed that THAAD if he didn't think there was a reason to...