Somewhere, I may still have a 'Restricted' document, that I once got arrested at bayonet-point for possessing*. It included some crash reports**. One involved some Jordanian Hunter pilots being trained to attack gun sites in Wales. The "attacks" were being filmed by two chaps in a pretend sandbagged enclosure just below a hilltop. They were also in radio communication with the "attacking" Hunters - the general technique was to fly directly at the gun site, so that your fire would '"suppress" the fire from the lads in the gun site. Most of the initial "attacks" broke off far too early. People were repeatedly advised to press home the attack until the last possible moment, to maintain the fire-suppression. The final pilot decided that he was going to be the best - but this ended up with him taking the top two rows of sandbags off, removing the cine camera and burying the two chaps, who had elected to lie down on the floor by this stage, under a deluge of sand.
One of the statements to the board of enquiry was along the lines of "By this stage, I had ceased to directly observe the situation, as I was lying face-down in the bottom of the gun pit".
* There were other potential offences at the time, but I was never actually charged.
** RAF crash reports of the 60s and 70s could be quite 'entertaining'.