Goofs

The amount of blood seeping through a freshly applied bandage on Kayla's left arm is cause for alarm-either she has a gaping wound in her flesh and she's loosing blood at an alarming rate, or the EMT who applied the dressing has no idea how to do so properly. The amount of blood coming through her new bandage seems to belie her casual dismissal of the wound's severity.

Trey fires at the agents with a .357 Colt Python revolver, which holds 6 rounds. He fires 7 shots, as follows; 1) Nina's windshield 2) Nina's car hood {grabs Kayla, backs them toward his Range Rover} 3) Tiff's passenger-side window [shown and heard twice, out of order, for dramatic effect, but with a 4th shot heard in between] 5) at Nina & Tiff {Scola & OA roll up behind Trey} 6) OA's passenger window and 7) at Scola.

The wound in Kayla's upper left arm is attributed to shrapnel from the shot which killed Trey. Shrapnel is created by metal when struck by a bullet. The killing shot entered Trey's back unimpeded, and likely remained in his body, (given the high-fragmentation ammo used by agents and the lack of damage to the helicopter behind him) thus having no opportunity to create any cast-off debris.

When Scola picks up the shell casing, he refers to it as a "45 Winchester". It is in fact a .45 ACP as the 45 Winchester is a Magnum, and has a longer casing than a .45 ACP..

The bouncer shot outside the doughnut shop takes a double-tap to the chest from a .45, and falls on his back; the last shot of him is a down-view with a puddle of blood spreading out beneath him. When the agents arrive they stand over a pool of blood with perfectly smooth edges, like ketchup just poured from a bottle. No evidence of smearing, spreading, irregularities on the edges, or dripping on the sidewalk as there would be if the blood had formed under a body which had then been removed. Regardless of the smooth edges, there is far too little blood left behind to account for the exit-wound damage done by two point-blank .45 shots to the chest of an adult male.

Kayla states the 'shrapnel' which caused her wound just missed her Brachial artery. As a nurse-trainee, she would know from her anatomical studies the Brachial artery is on the inside of the upper arm, closest to her breast, not the outside of the arm, from where she is bleeding.