I was at a country fair in the spring. Whilst walking round with the good lady, a visitor to a regimental stand was pointing an assault rifle directly at my head, eyeing me through the sight. Whilst I know that the gun would have been 100% safe, it was a very uncomfortable feeling and the supervising squaddie should have known far better.
Earlier in the day, before the show opened to the public, I noticed a rifle unattended on the bench at the front of the same stand whilst the "staff" were at the back having a natter. I was not impressed.