"In one of the pictures of the compound they show a power pylon quite close, I imagine there were quite a few wires around but equally I imagine they have onboard kit to detect that sort of thing. Are the demolition charges, sans primer, in place before the Op starts, I wonder?"
They knew every inch of the compound and surrounding area before they went in as would be expected.
"Are the demolition charges, sans primer, in place before the Op starts, I wonder?""
As in carried on board for use on taking down the Pylons by Raid people or placed beforehand by others on the ground ?