ever interview i did in northern ireland. it was with a former british soldier called jack chapman. he lived here in one of those flats. his balcony gave him a grandstand view of what happened. derry, state one, - take one, mr chapman. what did you see happen? the troops got out of their armoured cars, followed by 100 paratroopers, and they immediately got down into fighting positions and fired indiscriminately into the fleeing crowd running past my house. colonel wilford was interviewed in the bogside when the shooting was over. the facts are we were fired at first, and we retaliated in the only way possible to us, which was to return fire. jack chapman was a crucial eyewitness. all the shooting was done by the army, every bit of it, no doubt whatsoever at all. i interviewed derek wilford