Texas_Lone_Ranger
Civilian Defense
.308 out of a KAC SR-25 ^In the cell phone videos that have been posted people are looking parallel to the ridge and he can be plainly seen crawling up the roof, staying very low and flat. If the roof is at or near the same height at the roofs that the snipers were on then they would have very limited visibility of anyone staying low behind the ridge of the other roof.
The cop that climbed up from behind said he spotted crooks, who then pointed the rifle at him. He dropped down, then crooks raised up and started firing. If that is the case it makes sense that the counter sniper team would not be able to see him until he raised himself over the ridge of the roof to fire.
No closed eyes needed. The cellphone video supports him remaining low in order to stay out of sight until ready to shoot. Once spotted he knew the gig was up and played his hand. A few seconds later he took a 300 Win Mag to the cranium.