I cannot imagine how bad the Amtrak safety culture is that SSG's would not be placed every single time a track is fouled, even if the foul is only going to last a moment. This is the classic, "we do this all the time and never have a problem" trap. The fact that it is reported that Amtrak has now purchased additional SSG's, if true, suggests that the higher-ups were well aware of the practice and at least tacitly condoned it. Disgraceful.
I thought this on Sunday, and still think it today. Joe Boardman should be escorted out of the building by security right now. Not when he "retires." Now. Eight passengers and three employees dead, and dozens of passengers hurt due to Amtrak operating violations (and, yes, I'm assuming the NTSB will blame Amtrak for #188 - as far as I'm concerned, that is all but a given). It's time for Mr. Boardman to be held accountable.