Swan didn't like heavier music, Zeppelin, Skynard, and so on. Yet when the 110 is disbanded he starts playing Heart Crazy On You, a heavier song than he usually plays.
Reacher tortures a man on the intensive care ward by inflating the balloon in his urinary catheter. In a correctly.sited catheter the balloon will sit inside the bladder to prevent the catheter falling out. Inflating it further might cause the balloon to burst but it wouldn't cause the discomfort the man appears to experience.
At 28:04 Francis is attacked by a man with a cast saw. Cast saws are specifically designed to not cut through skin.