ČHOS
| Title | ČHOS |
| English title | CBDS (Czech Border Defence Society) |
| Director | Marie Lukáčová |
| Country | Czech Republic |
| Year | 2015 |
| Color | Colour |
| Duration | 00:09:35 |
| Festival year | 2021 |
| Online rental | No |
| On-Site rental | No |
Interview with members of a fictitious Czech Border Defence Society (CBDS), which represents an unknown knight group of guerrillas who live in the historic fortifications and fight against ubiquitous air supply.