Army pilots, at McConville’s direction, “will focus on safety and training protocols to ensure our pilots and crews have the knowledge, training and awareness to safely complete their assigned mission.”
Not a decision he took lightly I suspect - if there has been a reduction in Army Aviation safety for whatever reason then the right thing to do is take a marching pause to assess the situation rather than keep flying and wait for the next accident.
Much like finding yourself in a hole and realising you need to stop digging.