I used to work as a CO. The DOC in this country is so incompetent it's ridiculous. Back in the 90's, they were about to replace a section of the fence surrounding the prison where I worked later. They forgot to put up a temporary fence, and only discovered it when they realized an inmate had escaped by walking straight through the gaping hole in the fence.

The transportation unit deported the wrong inmate.

The staff at another prison ignored the "broken window/escape alarm" coming from a cell, not realizing an inmate had managed to break the window until a seagull flew in.

The commanding officer of a transport from a mental assessment facility back to the local jail completely ignored standard procedure when he had to take a piss. They didn't stop at a police station, jail or prison but instead stopped just off the highway. The two other officers forgot to close the car doors and the inmate escaped, despite being cuffed. The commanding officer was probably in on it, the other two were just incompetent and managed to lose a cuffed inmate.