[Text] 'Balloon bombs' preceded manned flight

[Text] 'Balloon bombs' preceded manned flight
ANCHORAGE, Alaska - The hot air balloon that disappeared south of Alaska this week, with which adventurer Michio Kanda hoped to fly from Japan to Oregon, followed a course pioneered in World War II by unmanned - and more lethal - Japanese balloons. In the last two years of the war, Japan launched t...