In a very important Bradfo Sho, Rob Bradford is joined by former NESN cameraman Bryan Brennan, who is spearheading a cause that has gained signficant momentum: the John Martin Foundation. The two discuss the path Martin -- a NESN cameraman -- has taken since being diagnosed with ALS, and the phenomenon that has become the "Cafe Martin" hats, which have recently been seen on the heads of such notable Boston sports figures as Tuukka Rask, Robert Kraft and David Ortiz. Brennan takes us behind the scenes of what is becoming the next big ALS fundraiser, along with a smattering of stories from the road with the Bruins and Red Sox.