Both formations met heavy flak and just after the drop had been made two of the first flight's aircraft were shot down.

Then he ran into heavy flak over the Administration's plan to forgive $7 billion in debts owed by Egypt for military aid.

There was a heavy flak over the target area and our aircraft was hit several times.

Craning his neck to look behind, Barton saw heavy flak bursting a few hundred yards ahead of the bombers.

They started pilking up some heavy flak about two miles out.

The troop carriers came under heavy flak from friend and foe alike.

They encountered heavy flak and were attacked by fighters, forcing an escape at very low level.

Gillespie went in to conduct a low-level rocket attack, but was shot down by heavy flak.

The main danger on these sorties was not enemy fighter defence, but heavy flak around the launch sites.

And around Australia she has faced heavy flak on a range of subjects.