Im following a series of posts with video's on fb. Showing CO being very intimidating and agressive behind a fence. As soon as the worker opens the gate and walks in the CO's run away and/or do nothing. 

Behaviour i have seen more often. 

What do you think, is this because lack of training? Altough CO supposed to be ''natural'' guardians? Or is it bad lines of CO? Bad individual dog ? Or what?

One of the vids can be seen on my fb page. https://www.facebook.com/ALEXcontactcombat 

If you have video of ''brave'' and fearless CO doing job , especially without owner present please share the link with me. 

Thanks for oppinions and insights.