In the largest raids since air attacks on North Vietnam began in February 1965, U.S. planes destroy five bridges, 17 railroad cars, and 20 buildings in the Thanh Hoa and Vinh areas (100 and 200 miles south of Hanoi, respectively). Others planes hit Highway 12 in four places north of the Mugia Pass and inflicted heavy damage on the Yen Bay arsenal and munitions storage area, which was located 75 miles northeast of Hanoi. A U.S. spokesman attributed the unprecedented number of planes taking part in the raids to an improvement in weather conditions.
This Day In History: May 30
