million dollars. don blankenship was given the maximum sentence for his role in a 2010 west virginia coal mine explosion. that explosion killed 29 workers. blankenship was convicted of conspireing to violate safety standards. a misdemeanor. but he was acquitted of felony charges. >>> here's something you don't see very often. a labor union protesting in support of the management of the company. that happened today in boston where pilots for united airlines picketed outside the office of a hedge fund pushing to remake the airline's board of directors. phil lebeau has our story. >> reporter: they walked in silence, but their message was loud and clear. pilots at united airlines want activist investors to stop meddling with the leadership of their airline. >> we truly don't know what exactly these groups have in mind for us. they've yet to state any intentions on what they plan for our future. but we do know what our current ceo has planned for our future. and we are facing that going