[MileHi]

“I just want you to know that we are working on it,” Brady recalled the president telling them. “We have to go through a few processes, but under the radar.”

So this was AFTER Brian Terry was killed?

[Yosemitest]

This is the first report in the news that I can find.
It doesn't mean that it wasn't in play before Brian Terry was killed.
It just means that this is the earliest REPORT that Obama KNEW a plan was in action.