earlier in your world this morning we talked to robert guarder, and traumatic brain injury, we asked him if he was surprised by any of the information features in the al jazeera documentary. >> our reports that we hear about of certain kinds of healthcare professionals behind the lines that are supplying athletes with number of substances many of which are banned, there is a black market, and the public needs to be aware of this, and i think the expose say does shine a light on this. >> in fact, you maintain one reason we have not heard so much about hbh, is because of what? is. >> well, i mean, for many years it was never agreed to be tested for. until -- >> this is the player's league. >> correct. and then why wouldn't you agree to test for something. >> hgh is testing for, that it certainly sets the tone, and sets the same for how -- what is accepted and what is not accepted. >> and the banned human growth hormone back in 1991, but didn't begin testing for it until 2014, no player has ever tested positive for that drug. severe weather causing chaos for travelers across the northea