Orange Giraffes and Security Guards

it was a very kindly security guard who i have to thank for this photo.
having set up the tripod and sorted the focus, shutter speed and aperture, i was just about to load the darkslide into the camera when said security guard walked over and told me i needed permission to photograph in the area. he asked how long i would be, and when i told him i'd only be a couple of minutes he just said that he was sure he'd never seen me, and walked away. thank you, security guard.