I just don't think Burkett would have done the actual faxing. With the cane and dog he's too easy to identify.
This was Mapes faxing to CBS or some other DNC underling and they were just using Burkett's account.
What cane and dog are you referring to? Is this Burkett guy blind or disabled? If so, he would have certainly needed "help" with this entire deal if he is the source. Get any available video surveillance tapes ASAP!