[piasa]

There was a ladder... the ladder a cop climbed.
It isn’t clear if it was a ladder the cops found and used to get up there or if it was there all along.

The perp could have put himself in position a day or so ahead of time and pulled a ladder up with him so as to not draw suspicion.
Or, climbed up a ladder he brought for the purpose and propositioned.
Or used one that has already been there.

[clearcarbon]

"The perp could have put himself in position a day or so ahead of time and pulled a ladder up with him so as to not draw suspicion. Or, climbed up a ladder he brought for the purpose and propositioned. Or used one that has already been there."

I'm inclined to believe it was rehearsed. Did the shooter expect to survive?