Saying "a 35 degrees angle is Not possible from that nest layout" would be incorrect. The physical position of the shooter needs to be taken into consideration. STANDING, sitting, kneeling, etc. Remember, there was an eyewitness, (forget who), that said something along the lines of someone in the sniper's nest/window "Standing DOWN".
I recall someone (Brennan?) saying the shooter stepped or stood back or down after the last shot.
In a military context, to 'stand down' means to relax from a ready position... which the shooter did after the last shot, apparently. Seems the shooter was a trained military type... possibly a Marine?
stand down
phrasal verb of stand
1.
withdraw or resign from a position or office.
"he stood down as leader of the party"
2.
relax or cause to relax after a state of readiness.
"if something doesn't happen soon, I guess they'll stand us down"
synonyms: relax, stand easy, come off full alert
"tell the troops to stand down"
phrasal verb of stand
1.
withdraw or resign from a position or office.
"he stood down as leader of the party"
2.
relax or cause to relax after a state of readiness.
"if something doesn't happen soon, I guess they'll stand us down"
synonyms: relax, stand easy, come off full alert
"tell the troops to stand down"