Yea, whiles I was speaking in prayer, even the man Gabriel, whom I had seen in the vision at the beginning, being caused to fly swiftly, touched me about the time of the evening oblation. The man Gabriel - Or the angel Gabriel, who had appeared to me as a man. איש ish is the same here as person - the person Gabriel.
Being caused to fly swiftly - God hears with delight such earnest, humble, urgent prayers; and sends the speediest answer. Gabriel himself was ordered on this occasion to make more than usual speed.