A Twin Cities attorney who took an unexpected solo hot air balloon flight during a Minnesota Vikings game in 1969 will share his story Thursday, Nov. 5, at the Wings of the North Air Museum in Eden Prairie. Richard Snyder was 11 years old when he climbed into his family’s hot air balloon during a halftime promotion for the St. Paul Winter Carnival at Metropolitan Stadium on Dec. 14, 1969. The balloon was supposed to rise about 200 feet while tet…