This document contains links to 13 photos on Flickr with attribution to the photographers. The photos are not further described and appear to be from various locations and situations as they were uploaded by different photographers.

2. Photo by ThreeIfByBike - http://www.flickr.com/photos/three_if_by_bike/3140467406/

4. Photo by Eirik Refsdal - http://www.flickr.com/photos/eirikref/727551264/

5. Photo by Jason Scragz - http://www.flickr.com/photos/scragz/91147636/

6. Photo by Mark Hillary - http://www.flickr.com/photos/markhillary/370268513/

9. Photo by Eduardo Tavares - http://www.flickr.com/photos/e_tavares/3499009813/

10. Photo by Kristina Alexanderson - http://www.flickr.com/photos/kalexanderson/6036803590/

14. Photo by Alpha - http://www.flickr.com/photos/avlxyz/8292784414/

19. Photo by D. Sharon Pruitt - http://www.flickr.com/photos/pinksherbet/3038760752/

20. Photo by Marshall Astor - http://www.flickr.com/photos/lifeontheedge/2460153756/

21. Photo by Martin Cathrae - http://www.flickr.com/photos/suckamc/5685064151/

22. Photo by David Prasad - http://www.flickr.com/photos/33671002@N00/6071431228/

23. Photo by Philipp Pohle - http://www.flickr.com/photos/97321708@N07/9314723913/

24. Photo by Marc Wathieu - http://www.flickr.com/photos/marcwathieu/2979568085/

25. Photo by Toni Camara - http://www.flickr.com/photos/ancama_99/4236325010/