I believe there's a secret service sniper who took a shot and I heard a local County sniper also took a shot.

I'm wondering if he was laying down for the first three shots and then stood up for the next five which could account for the different echo.

My assumption is he had to know that bullets were about to be coming his way.

There's video of cops counting 8 shell casings when they get on the roof

EDIT.

Local Butler County cop took 9th shot, was not a sniper. See my recent post

I believe there's a secret service sniper who took a shot and I heard a local County sniper also took a shot.

I'm wondering if he was laying down for the first three shots and then stood up for the next five which could account for the different echo.

My assumption is he had to know that bullets were about to be coming his way.

There's video of cops counting 8 shell casings when they get on the roof