at your discretion

Also found in: Idioms.

“at your discretion”

When transmitted by ATC (air traffic control) clearing or FIS (flight information service), it is advising the pilot that he or she can commence maneuvering.
References in classic literature ?
In the second case, when those who fight are of such a character that you have no anxiety as to who may conquer, so much the more is it greater prudence to be allied, because you assist at the destruction of one by the aid of another who, if he had been wise, would have saved him; and conquering, as it is impossible that he should not do with your assistance, he remains at your discretion.