I watched about five minutes of that sappy "documentary" which is about as much as I could stomach.
people who join the armed services do so with the implicit understanding that they may go in harm's way and they may not return. the contractors that select to go into a war zone know they aren't going to resort. those contractors are well remunerated, commensurate with their level of risk in the particular job they do, training and experience. for some of these guys it's all they know and they are willing to accept the same level of risks they accepted from uncle sugar work but for many times more money.
naturally, some of the parents and the loved ones of those that fall will be bitter and look to blame or lash out at the gubment but I'm willing to bet that the vast majority of those same people understand that their loved one died doing something they wanted to do and accept the fact that we are all mortal and one day must die. these contractors rolled the dice and lost, they paid with their lives but they knew the stakes going into the game. they are no less heroic than the grunt who gets killed for doing his duty as private.
what is cheap is the reaction of the families and worse the exploitation of these emotions by people like robert greenwald. if there is a slimey war profiteer it's people of this ilk and supporters of his work like you hand wringing apologists for everything that is wrong with america.