The round clips him on the shoulder - totally non-fatal- so he pushes onward and calls back; "Civilian casualties, it's a sad reality..."

As usual, the idea hits him before the actual consideration of the consequences of his actions - which occurs to him right as he drops down off the high shelf onto Murdock's position.

He tosses the empty pistol down beside him right as he lands on top of his friend, pinning him against the shiny linoleum floor.