Completed the following sentence: The first atomic bomb test by the Soviet Union in August 1949 came earlier than expected by Americans, and McMahon immediately urged that U.S. production of atomic weapons be substantially increased. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ McMahon was strongly in favor of going ahead with the Super, and argued as much in a series of letters he wrote to President Truman.<unk> McMahon was strongly in favor of going ahead with the Super, and argued as much in a series of letters he wrote to President Truman. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️
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