Trung waited 10 seconds and then departed himself. He headed for downtown Saigon and destroyed the center of the palace. (President Nguyen Van Thieu escaped unhurt.)
When we were there 1992-1993 you could tour the Palace and see where he dropped his bomb load, basically missed his target mainly.
He flew as an F/O on our B767, very handy some times especially in Hanoi.
We were approaching Hanoi one flight and being messed around no end, forced to hold way out for local traffic, a few words from Trung in Vietnamese over the radio and we were cleared for immediate priority approach.
I always found him to be quite a nice person, as long as you could overlook the fact he was a Traitor.