As DDZ stated, did the SS sniper really need approval to take the shot?
I wouldn't doubt it in the least
But unless something has changed, it used
to be SOP that there was ONE commander
for all LEO involved in that kind of security
detail, and everyone involved was thoroughly
briefed on the plan in advance, and NOBODY
deviated from it at all. EVERYBODY knew where
everybody else was at in advance, and EVERYBODY
had the same comms on the same channel.
As soon as the shooter was spotted, it would
be lights out immediately. They shouldn't have
had to wait for a green light to neutralize the
threat, much less to wait and see what the
intentions were