A window fell off a U.S. military helicopter Friday at a U.S. base southwest of Tokyo, but no one was injured, Japanese Defense Minister Itsunori Onodera said.The incident at the U.S. Atsugi base in Kanagawa Prefecture follows a similar incident last December, in which a window of a U.S. military helicopter fell onto an elementary school playground in the southern island prefecture of Okinawa."While no one was injured (on Friday) and it's a case that happened inside a U.S. military base, a window falling is a serious problem," Onodera told reporters.In the latest case, the window fell from …READ FULL ARTICLE