Uno Buno

My "puppy" Uno ( he is really almost 3!!) has had some issues learning the come command...He will come to me almost anytime, exept if he is barking at the fence, or doing something that is more interesting. I have decided that I need to train him to come WHENEVER I call him, just in case. This is the first day of actual "you must come" training, and it is going okay :) Here is a picture of him: