@STORING: Euins, Couch ,Jackson, and Brennan were 4 of the closest witness to observe a rifle in the hands of someone at the SE 6th floor TSBD window , agreed?
Why do NONE of them see a scope on the rifle?
Arnold Rowland, however, who was a block away and looking diagonally across that block at distance of 250 ft ( 2x farther away) at the SW 6th floor TSBD window DID see a scope on a rifle held by someone at 12:15pm.
Euins said the rifle barrel he saw at the SE window looked like a pipe about 15” long by 1/2 inch in diameter. And he thought he could see about 3ft of the rifle sticking out the window. And yet he saw no scope even though from his perspective the left side scope of the MC rifle would have been easy to see. Euins was far sighted so how he was unable to see the left side mounted scope of the MC rifle is a mystery from a distance of only about 100ft away (distance includes looking up the 72 ft height side of the TSBD to 6th floor level)
Jackson and Couch from their car position still on Houston st and not far from turning on Elm st (judging from the W-film, ) saw no scope either.
What about 2 shooters on the 6th floor of TSBD as a theory? The SE window shooter got the Z313 shot and then he could have been able to
Run to the rear staircase in 10 secs ( only 80 ft away). He could have tossed his rifle out the 6th floor west window beside the staircase just before he starts down the stairs.
The rifle in about 3 secs would fall and land on the roof of that adjacent annex building which is at the 2nd floor level of TSBD.
Somebody waiting on that 2nd story high roof hides the rifle somewhere?